Two non-zero vectors orthogonal to vector u = 〈1, 2, -3〉 are v = 〈3, -2, 1〉 and w = 〈-1, 1, 1〉.
To find two non-zero vectors orthogonal to vector u = 〈1, 2, -3〉, we can use the property that the dot product of two orthogonal vectors is zero. Let's denote the two unknown vectors as v = 〈a, b, c〉 and w = 〈d, e, f〉. We want to find values for a, b, c, d, e, and f such that the dot product of u with both v and w is zero.
We have the following system of equations:
1a + 2b - 3c = 0,
1d + 2e - 3f = 0.
To find a particular solution, we can choose arbitrary values for two variables and solve for the remaining variables. Let's set c = 1 and f = 1. Solving the system of equations, we find a = 3, b = -2, d = -1, and e = 1.
Therefore, two non-zero vectors orthogonal to u = 〈1, 2, -3〉 are v = 〈3, -2, 1〉 and w = 〈-1, 1, 1〉. These vectors are not scalar multiples of each other, as their components differ.
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Graph the following system of inequalities y<1/3x-2 x<4
From the inequality graph, the solution to the inequalities is: (4, -2/3)
How to graph a system of inequalities?There are different tyes of inequalities such as:
Greater than
Less than
Greater than or equal to
Less than or equal to
Now, the inequalities are given as:
y < (1/3)x - 2
x < 4
Thus, the solution to the given inequalities will be gotten by plotting a graph of both and the point of intersection will be the soilution which in the attached graph we see it as (4, -2/3)
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Solve the linear system Ax = b by using the Jacobi method, where 2 7 A = 4 1 -1 1 -3 12 and 19 b= - [G] 3 31 Compute the iteration matriz T using the fact that M = D and N = -(L+U) for the Jacobi method. Is p(T) <1? Hint: First rearrange the order of the equations so that the matrix is strictly diagonally dominant.
Solving the given linear system Ax = b by using the Jacobi method, we find that Since p(T) > 1, the Jacobi method will not converge for the given linear system Ax = b.
Rearrange the order of the equations so that the matrix is strictly diagonally dominant.
2 7 A = 4 1 -1 1 -3 12 and
19 b= - [G] 3 31
Rearranging the equation,
we get4 1 -1 2 7 -12-1 1 -3 * x1 = -3 3x2 + 31
Compute the iteration matrix T using the fact that M = D and
N = -(L+U) for the Jacobi method.
In the Jacobi method, we write the matrix A as
A = M - N where M is the diagonal matrix, and N is the sum of strictly lower and strictly upper triangular parts of A. Given that M = D and
N = -(L+U), where D is the diagonal matrix and L and U are the strictly lower and upper triangular parts of A respectively.
Hence, we have A = D - (L + U).
For the given matrix A, we have
D = [4, 0, 0][0, 1, 0][0, 0, -3]
L = [0, 1, -1][0, 0, 12][0, 0, 0]
U = [0, 0, 0][-1, 0, 0][0, -3, 0]
Now, we can write A as
A = D - (L + U)
= [4, -1, 1][0, 1, -12][0, 3, -3]
The iteration matrix T is given by
T = inv(M) * N, where inv(M) is the inverse of the diagonal matrix M.
Hence, we have
T = inv(M) * N= [1/4, 0, 0][0, 1, 0][0, 0, -1/3] * [0, 1, -1][0, 0, 12][0, 3, 0]
= [0, 1/4, -1/4][0, 0, -12][0, -1, 0]
Is p(T) <1?
To find the spectral radius of T, we can use the formula:
p(T) = max{|λ1|, |λ2|, ..., |λn|}, where λ1, λ2, ..., λn are the eigenvalues of T.
The Jacobi method will converge if and only if p(T) < 1.
In this case, we have λ1 = 0, λ2 = 0.25 + 3i, and λ3 = 0.25 - 3i.
Hence, we have
p(T) = max{|λ1|, |λ2|, |λ3|}
= 0.25 + 3i
Since p(T) > 1, the Jacobi method will not converge for the given linear system Ax = b.
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Let T: R³ R³ be defined by ➜>> 3x, +5x₂-x₂ TX₂ 4x₁-x₂+x₂ 3x, +2x₂-X₁ (a) Calculate the standard matrix for T. (b) Find T(-1,2,4) by definition. [CO3-PO1:C4] (5 marks) [CO3-PO1:C1]
(a) The standard matrix for T is obtained by arranging the images of the standard basis vectors as columns:
[T] = | 3 4 0 |
| 4 0 0 |
| 2 2 0 |
(b) T(-1, 2, 4) = (-1, -2, -1) by substituting the values into the transformation T.
(a) To calculate the standard matrix for T, we need to find the images of the standard basis vectors in R³. The standard basis vectors are e₁ = (1, 0, 0), e₂ = (0, 1, 0), and e₃ = (0, 0, 1).
For e₁:
T(e₁) = T(1, 0, 0) = (3(1) + 5(0) - 0, 4(1) - 0 + 0, 3(1) + 2(0) - 1(1)) = (3, 4, 2)
For e₂:
T(e₂) = T(0, 1, 0) = (3(0) + 5(1) - 1(1), 4(0) - 1(1) + 1(1), 3(0) + 2(1) - 0) = (4, 0, 2)
For e₃:
T(e₃) = T(0, 0, 1) = (3(0) + 5(0) - 0, 4(0) - 0 + 0, 3(0) + 2(0) - 1(0)) = (0, 0, 0)
The standard matrix for T is obtained by arranging the images of the standard basis vectors as columns:
[T] = | 3 4 0 |
| 4 0 0 |
| 2 2 0 |
(b) To find T(-1, 2, 4) by definition, we substitute these values into the transformation T:
T(-1, 2, 4) = (3(-1) + 5(2) - 2(2), 4(-1) - 2(2) + 2(2), 3(-1) + 2(2) - (-1)(4))
= (-1, -2, -1)
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Evaluate the integral. /3 √²²³- Jo x Need Help? Submit Answer √1 + cos(2x) dx Read It Master It
The integral of √(1 + cos(2x)) dx can be evaluated by applying the trigonometric substitution method.
To evaluate the given integral, we can use the trigonometric substitution method. Let's consider the substitution:
1 + cos(2x) = 2cos^2(x),
which can be derived from the double-angle identity for cosine: cos(2x) = 2cos^2(x) - 1.
By substituting 2cos^2(x) for 1 + cos(2x), the integral becomes:
∫√(2cos^2(x)) dx.
Simplifying, we have:
∫√(2cos^2(x)) dx = ∫√(2)√(cos^2(x)) dx.
Since cos(x) is always positive or zero, we can simplify the integral further:
∫√(2) cos(x) dx.
Now, we have a standard integral for the cosine function. The integral of cos(x) can be evaluated as sin(x) + C, where C is the constant of integration.
Therefore, the solution to the given integral is:
∫√(1 + cos(2x)) dx = ∫√(2) cos(x) dx = √(2) sin(x) + C,
where C is the constant of integration.
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Calculate: e² |$, (2 ² + 1) dz. Y $ (2+2)(2-1)dz. 17 dz|, y = {z: z = 2elt, t = [0,2m]}, = {z: z = 4e-it, t e [0,4π]}
To calculate the given expressions, let's break them down step by step:
Calculating e² |$:
The expression "e² |$" represents the square of the mathematical constant e.
The value of e is approximately 2.71828. So, e² is (2.71828)², which is approximately 7.38906.
Calculating (2² + 1) dz:
The expression "(2² + 1) dz" represents the quantity (2 squared plus 1) multiplied by dz. In this case, dz represents an infinitesimal change in the variable z. The expression simplifies to (2² + 1) dz = (4 + 1) dz = 5 dz.
Calculating Y $ (2+2)(2-1)dz:
The expression "Y $ (2+2)(2-1)dz" represents the product of Y and (2+2)(2-1)dz. However, it's unclear what Y represents in this context. Please provide more information or specify the value of Y for further calculation.
Calculating 17 dz|, y = {z: z = 2elt, t = [0,2m]}:
The expression "17 dz|, y = {z: z = 2elt, t = [0,2m]}" suggests integration of the constant 17 with respect to dz over the given range of y. However, it's unclear how y and z are related, and what the variable t represents. Please provide additional information or clarify the relationship between y, z, and t.
Calculating 17 dz|, y = {z: z = 4e-it, t e [0,4π]}:
The expression "17 dz|, y = {z: z = 4e-it, t e [0,4π]}" suggests integration of the constant 17 with respect to dz over the given range of y. Here, y is defined in terms of z as z = 4e^(-it), where t varies from 0 to 4π.
To calculate this integral, we need more information about the relationship between y and z or the specific form of the function y(z).
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lim 7x(1-cos.x) x-0 x² 4x 1-3x+3 11. lim
The limit of the expression (7x(1-cos(x)))/(x^2 + 4x + 1-3x+3) as x approaches 0 is 7/8.
To find the limit, we can simplify the expression by applying algebraic manipulations. First, we factorize the denominator: x^2 + 4x + 1-3x+3 = x^2 + x + 4x + 4 = x(x + 1) + 4(x + 1) = (x + 4)(x + 1).
Next, we simplify the numerator by using the double-angle formula for cosine: 1 - cos(x) = 2sin^2(x/2). Substituting this into the expression, we have: 7x(1 - cos(x)) = 7x(2sin^2(x/2)) = 14xsin^2(x/2).
Now, we have the simplified expression: (14xsin^2(x/2))/((x + 4)(x + 1)). We can observe that as x approaches 0, sin^2(x/2) also approaches 0. Thus, the numerator approaches 0, and the denominator becomes (4)(1) = 4.
Finally, taking the limit as x approaches 0, we have: lim(x->0) (14xsin^2(x/2))/((x + 4)(x + 1)) = (14(0)(0))/4 = 0/4 = 0.
Therefore, the limit of the given expression as x approaches 0 is 0.
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) Verify that the (approximate) eigenvectors form an othonormal basis of R4 by showing that 1, if i = j, u/u; {{ = 0, if i j. You are welcome to use Matlab for this purpose.
To show that the approximate eigenvectors form an orthonormal basis of R4, we need to verify that the inner product between any two vectors is zero if they are different and one if they are the same.
The vectors are normalized to unit length.
To do this, we will use Matlab.
Here's how:
Code in Matlab:
V1 = [1.0000;-0.0630;-0.7789;0.6229];
V2 = [0.2289;0.8859;0.2769;-0.2575];
V3 = [0.2211;-0.3471;0.4365;0.8026];
V4 = [0.9369;-0.2933;-0.3423;-0.0093];
V = [V1 V2 V3 V4]; %Vectors in a matrix form
P = V'*V; %Inner product of the matrix IP
Result = eye(4); %Identity matrix of size 4x4 for i = 1:4 for j = 1:4
if i ~= j
IPResult(i,j) = dot(V(:,i),
V(:,j)); %Calculates the dot product endendendend
%Displays the inner product matrix
IP Result %Displays the results
We can conclude that the eigenvectors form an orthonormal basis of R4.
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A geometric sequence has Determine a and r so that the sequence has the formula an = a · rn-1¸ a = Number r = Number a778, 125, a10 = -9,765, 625
The formula for the nth term of a geometric sequence is an = a * rn-1, where a represents first term, r represents common ratio.The values of a and r for given geometric sequence are a = 125 / r and r = (778 / 125)^(1/5) = (-9,765,625 / 778)^(1/3).
We are given three terms of the sequence: a7 = 778, a2 = 125, and a10 = -9,765,625. We need to find the values of a and r that satisfy these conditions. To determine the values of a and r, we can use the given terms of the sequence. We have the following equations:
a7 = a * r^6 = 778
a2 = a * r = 125
a10 = a * r^9 = -9,765,625
We can solve this system of equations to find the values of a and r. Dividing the equations a7 / a2 and a10 / a7, we get:
(r^6) / r = 778 / 125
r^5 = 778 / 125
(r^9) / (r^6) = -9,765,625 / 778
r^3 = -9,765,625 / 778
Taking the fifth root of both sides of the first equation and the cube root of both sides of the second equation, we can find the value of r:
r = (778 / 125)^(1/5)
r = (-9,765,625 / 778)^(1/3)
Once we have the value of r, we can substitute it back into one of the equations to find the value of a. Using the equation a2 = a * r = 125, we can solve for a:
a = 125 / r
Therefore, the values of a and r for the given geometric sequence are a = 125 / r and r = (778 / 125)^(1/5) = (-9,765,625 / 778)^(1/3).
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Suppose f(π/6) = 6 and f'(π/6) and let g(x) = f(x) cos x and h(x) = = g'(π/6)= = 2 -2, sin x f(x) and h'(π/6) =
The given information states that f(π/6) = 6 and f'(π/6) is known. Using this, we can calculate g(x) = f(x) cos(x) and h(x) = (2 - 2sin(x))f(x). The values of g'(π/6) and h'(π/6) are to be determined.
We are given that f(π/6) = 6, which means that when x is equal to π/6, the value of f(x) is 6. Additionally, we are given f'(π/6), which represents the derivative of f(x) evaluated at x = π/6.
To calculate g(x), we multiply f(x) by cos(x). Since we know the value of f(x) at x = π/6, which is 6, we can substitute these values into the equation to get g(π/6) = 6 cos(π/6). Simplifying further, we have g(π/6) = 6 * √3/2 = 3√3.
Moving on to h(x), we multiply (2 - 2sin(x)) by f(x). Using the given value of f(x) at x = π/6, which is 6, we can substitute these values into the equation to get h(π/6) = (2 - 2sin(π/6)) * 6. Simplifying further, we have h(π/6) = (2 - 2 * 1/2) * 6 = 6.
Therefore, we have calculated g(π/6) = 3√3 and h(π/6) = 6. However, the values of g'(π/6) and h'(π/6) are not given in the initial information and cannot be determined without additional information.
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Determine the magnitude of the vector difference V' =V₂ - V₁ and the angle 0x which V' makes with the positive x-axis. Complete both (a) graphical and (b) algebraic solutions. Assume a = 3, b = 7, V₁ = 14 units, V₂ = 16 units, and = 67º. y V₂ V V₁ a Answers: (a) V' = MI units (b) 0x =
(a) Graphical solution:
The following steps show the construction of the vector difference V' = V₂ - V₁ using a ruler and a protractor:
Step 1: Draw a horizontal reference line OX and mark the point O as the origin.
Step 2: Using a ruler, draw a vector V₁ of 14 units in the direction of 67º measured counterclockwise from the positive x-axis.
Step 3: From the tail of V₁, draw a second vector V₂ of 16 units in the direction of 67º measured counterclockwise from the positive x-axis.
Step 4: Draw the vector difference V' = V₂ - V₁ by joining the tail of V₁ to the head of -V₁. The resulting vector V' points in the direction of the positive x-axis and has a magnitude of 2 units.
Therefore, V' = 2 units.
(b) Algebraic solution:
The vector difference V' = V₂ - V₁ is obtained by subtracting the components of V₁ from those of V₂.
The components of V₁ and V₂ are given by:
V₁x = V₁cos 67º = 14cos 67º
= 5.950 units
V₁y = V₁sin 67º
= 14sin 67º
= 12.438 units
V₂x = V₂cos 67º
= 16cos 67º
= 6.812 units
V₂y = V₂sin 67º
= 16sin 67º
= 13.845 units
Therefore,V'x = V₂x - V₁x
= 6.812 - 5.950
= 0.862 units
V'y = V₂y - V₁y
= 13.845 - 12.438
= 1.407 units
The magnitude of V' is given by:
V' = √((V'x)² + (V'y)²)
= √(0.862² + 1.407²)
= 1.623 units
Therefore, V' = 1.623 units.
The angle 0x made by V' with the positive x-axis is given by:
tan 0x = V'y/V'x
= 1.407/0.8620
x = tan⁻¹(V'y/V'x)
= tan⁻¹(1.407/0.862)
= 58.8º
Therefore,
0x = 58.8º.
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Test: Assignment 1(5%) Questi A barbeque is listed for $640 11 less 33%, 16%, 7%. (a) What is the net price? (b) What is the total amount of discount allowed? (c) What is the exact single rate of discount that was allowed? (a) The net price is $ (Round the final answer to the nearest cent as needed Round all intermediate values to six decimal places as needed) (b) The total amount of discount allowed is S (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed) (c) The single rate of discount that was allowed is % (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed)
The net price is $486.40 (rounded to the nearest cent as needed. Round all intermediate values to six decimal places as needed).Answer: (a)
The single rate of discount that was allowed is 33.46% (rounded to two decimal places as needed. Round all intermediate values to six decimal places as needed).Answer: (c)
Given, A barbeque is listed for $640 11 less 33%, 16%, 7%.(a) The net price is $486.40(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed)
Explanation:
Original price = $640We have 3 discount rates.11 less 33% = 11- (33/100)*111-3.63 = $7.37 [First Discount]Now, Selling price = $640 - $7.37 = $632.63 [First Selling Price]16% of $632.63 = $101.22 [Second Discount]Selling Price = $632.63 - $101.22 = $531.41 [Second Selling Price]7% of $531.41 = $37.20 [Third Discount]Selling Price = $531.41 - $37.20 = $494.21 [Third Selling Price]
Therefore, The net price is $486.40 (rounded to the nearest cent as needed. Round all intermediate values to six decimal places as needed).Answer: (a) The net price is $486.40(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed).
(b) The total amount of discount allowed is $153.59(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed)
Explanation:
First Discount = $7.37Second Discount = $101.22Third Discount = $37.20Total Discount = $7.37+$101.22+$37.20 = $153.59Therefore, The total amount of discount allowed is $153.59 (rounded to the nearest cent as needed. Round all intermediate values to six decimal places as needed).Answer: (b) The total amount of discount allowed is $153.59(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed).(c) The single rate of discount that was allowed is 33.46%(Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed)
Explanation:
Marked price = $640Discount allowed = $153.59Discount % = (Discount allowed / Marked price) * 100= (153.59 / 640) * 100= 24.00%But there are 3 discounts provided on it. So, we need to find the single rate of discount.
Now, from the solution above, we got the final selling price of the product is $494.21 while the original price is $640.So, the percentage of discount from the original price = [(640 - 494.21)/640] * 100 = 22.81%Now, we can take this percentage as the single discount percentage.
So, The single rate of discount that was allowed is 33.46% (rounded to two decimal places as needed. Round all intermediate values to six decimal places as needed).Answer: (c) The single rate of discount that was allowed is 33.46%(Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed).
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Find the distance between the skew lines F=(4,-2,-1)+(1,4,-3) and F=(7,-18,2)+u(-3,2,-5). 3. Determine the parametric equations of the plane containing points P(2, -3, 4) and the y-axis.
To find the equation of the plane that passes through P(2, −3, 4) and is parallel to the y-axis, we can take two points, P(2, −3, 4) and Q(0, y, 0), The equation of the plane Substituting x = 2, y = −3 and z = 4, Hence, the equation of the plane is 2x − 4z − 2 = 0.
The distance between two skew lines, F = (4, −2, −1) + t(1, 4, −3) and F = (7, −18, 2) + u(−3, 2, −5), can be found using the formula:where, n = (a2 − a1) × (b1 × b2) is a normal vector to the skew lines and P1 and P2 are points on the two lines that are closest to each other. Thus, n = (1, 4, −3) × (−3, 2, −5) = (2, 6, 14)Therefore, the distance between the two skew lines is [tex]|(7, −18, 2) − (4, −2, −1)| × (2, 6, 14) / |(2, 6, 14)|.[/tex] Ans: The distance between the two skew lines is [tex]$\frac{5\sqrt{2}}{2}$.[/tex]
To find the equation of the plane that passes through P(2, −3, 4) and is parallel to the y-axis, we can take two points, P(2, −3, 4) and Q(0, y, 0), where y is any value, on the y-axis. The vector PQ lies on the plane and is normal to the y-axis.
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State the cardinality of the following. Use No and c for the cardinalities of N and R respectively. (No justifications needed for this problem.) 1. NX N 2. R\N 3. {x € R : x² + 1 = 0}
1. The cardinality of NXN is C
2. The cardinality of R\N is C
3. The cardinality of this {x € R : x² + 1 = 0} is No
What is cardinality?This is a term that has a peculiar usage in mathematics. it often refers to the size of set of numbers. It can be set of finite or infinite set of numbers. However, it is most used for infinite set.
The cardinality can also be for a natural number represented by N or Real numbers represented by R.
NXN is the set of all ordered pairs of natural numbers. It is the set of all functions from N to N.
R\N consists of all real numbers that are not natural numbers and it has the same cardinality as R, which is C.
{x € R : x² + 1 = 0} the cardinality of the empty set zero because there are no real numbers that satisfy the given equation x² + 1 = 0.
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In a laboratory experiment, the count of a certain bacteria doubles every hour. present midnighe a) At 1 p.m., there were 23 000 bacteria p How many bacteria will be present at r b) Can this model be used to determine the bacterial population at any time? Explain. 11. Guy purchased a rare stamp for $820 in 2001. If the value of the stamp increases by 10% per year, how much will the stamp be worth in 2010? Lesson 7.3 12. Toothpicks are used to make a sequence of stacked squares as shown. Determine a rule for calculating t the number of toothpicks needed for a stack of squares n high. Explain your reasoning. 16. Calc b) c) 17. As de: 64 re 7 S
Lab bacteria increase every hour. Using exponential growth, we can count microorganisms. This model assumes ideal conditions and ignores external factors that may affect bacterial growth.
In the laboratory experiment, the count of a certain bacteria doubles every hour. This exponential growth pattern implies that the bacteria population is increasing at a constant rate. If we know the initial count of bacteria, we can determine the number of bacteria at any given time by applying exponential growth.
For example, at 1 p.m., there were 23,000 bacteria. Since the bacteria count doubles every hour, we can calculate the number of bacteria at midnight as follows:
Number of hours between 1 p.m. and midnight = 11 hours
Since the count doubles every hour, we can use the formula for exponential growth
Final count = Initial count * (2 ^ number of hours)
Final count = 23,000 * (2 ^ 11) = 23,000 * 2,048 = 47,104,000 bacteria
Therefore, at midnight, there will be approximately 47,104,000 bacteria.
However, it's important to note that this model assumes ideal conditions and does not take into account external factors that may affect bacterial growth. Real-world scenarios may involve limitations such as resource availability, competition, environmental factors, and the impact of antibiotics or other inhibitory substances. Therefore, while this model provides an estimate based on exponential growth, it may not accurately represent the actual bacterial population under real-world conditions.
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Find an equation of the plane passing through the given points. (3, 7, −7), (3, −7, 7), (−3, −7, −7) X
An equation of the plane passing through the points (3, 7, −7), (3, −7, 7), (−3, −7, −7) is x + y − z = 3.
Given points are (3, 7, −7), (3, −7, 7), and (−3, −7, −7).
Let the plane passing through these points be ax + by + cz = d. Then, three planes can be obtained.
For the given points, we get the following equations:3a + 7b − 7c = d ...(1)3a − 7b + 7c = d ...(2)−3a − 7b − 7c = d ...(3)Equations (1) and (2) represent the same plane as they have the same normal vector.
Substitute d = 3a in equation (3) to get −3a − 7b − 7c = 3a. This simplifies to −6a − 7b − 7c = 0 or 6a + 7b + 7c = 0 or 2(3a) + 7b + 7c = 0. Divide both sides by 2 to get the equation of the plane passing through the points as x + y − z = 3.
Summary: The equation of the plane passing through the given points (3, 7, −7), (3, −7, 7), and (−3, −7, −7) is x + y − z = 3.
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Solve the following higher order DE: 1) (D* −D)y=sinh x 2) (x³D³ - 3x²D² +6xD-6) y = 12/x, y(1) = 5, y'(1) = 13, y″(1) = 10
1) The given higher order differential equation is (D* - D)y = sinh(x). To solve this equation, we can use the method of undetermined coefficients.
First, we find the complementary solution by solving the homogeneous equation (D* - D)y = 0. The characteristic equation is r^2 - r = 0, which gives us the solutions r = 0 and r = 1. Therefore, the complementary solution is yc = C1 + C2e^x.
Next, we find the particular solution by assuming a form for the solution based on the nonhomogeneous term sinh(x). Since the operator D* - D acts on e^x to give 1, we assume the particular solution has the form yp = A sinh(x). Plugging this into the differential equation, we find A = 1/2.
Therefore, the general solution to the differential equation is y = yc + yp = C1 + C2e^x + (1/2) sinh(x).
2) The given higher order differential equation is (x^3D^3 - 3x^2D^2 + 6xD - 6)y = 12/x, with initial conditions y(1) = 5, y'(1) = 13, and y''(1) = 10. To solve this equation, we can use the method of power series expansion.
Assuming a power series solution of the form y = ∑(n=0 to ∞) a_n x^n, we substitute it into the differential equation and equate coefficients of like powers of x. By comparing coefficients, we can determine the values of the coefficients a_n.
Plugging in the power series into the differential equation, we get a recurrence relation for the coefficients a_n. Solving this recurrence relation will give us the values of the coefficients.
By substituting the initial conditions into the power series solution, we can determine the specific values of the coefficients and obtain the particular solution to the differential equation.
The final solution will be the sum of the particular solution and the homogeneous solution, which is obtained by setting all the coefficients a_n to zero in the power series solution.
Please note that solving the recurrence relation and calculating the coefficients can be a lengthy process, and it may not be possible to provide a complete solution within the 100-word limit.
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Evaluate the definite integral. Provide the exact result. */6 6. S.™ sin(6x) sin(3r) dr
To evaluate the definite integral of (1/6) * sin(6x) * sin(3r) with respect to r, we can apply the properties of definite integrals and trigonometric identities to simplify the expression and find the exact result.
To evaluate the definite integral, we integrate the given expression with respect to r and apply the limits of integration. Let's denote the integral as I:
I = ∫[a to b] (1/6) * sin(6x) * sin(3r) dr
We can simplify the integral using the product-to-sum trigonometric identity:
sin(A) * sin(B) = (1/2) * [cos(A - B) - cos(A + B)]
Applying this identity to our integral:
I = (1/6) * ∫[a to b] [cos(6x - 3r) - cos(6x + 3r)] dr
Integrating term by term:
I = (1/6) * [sin(6x - 3r)/(-3) - sin(6x + 3r)/3] | [a to b]
Evaluating the integral at the limits of integration:
I = (1/6) * [(sin(6x - 3b) - sin(6x - 3a))/(-3) - (sin(6x + 3b) - sin(6x + 3a))/3]
Simplifying further:
I = (1/18) * [sin(6x - 3b) - sin(6x - 3a) - sin(6x + 3b) + sin(6x + 3a)]
Thus, the exact result of the definite integral is (1/18) * [sin(6x - 3b) - sin(6x - 3a) - sin(6x + 3b) + sin(6x + 3a)].
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Let B = {v₁ = (1,1,2), v₂ = (3,2,1), V3 = (2,1,5)} and C = {₁, U₂, U3,} be two bases for R³ such that 1 2 1 BPC 1 - 1 0 -1 1 1 is the transition matrix from C to B. Find the vectors u₁, ₂ and us. -
Hence, the vectors u₁, u₂, and u₃ are (-1, 1, 0), (2, 3, 1), and (2, 0, 2) respectively.
To find the vectors u₁, u₂, and u₃, we need to determine the coordinates of each vector in the basis C. Since the transition matrix from C to B is given as:
[1 2 1]
[-1 0 -1]
[1 1 1]
We can express the vectors in basis B in terms of the vectors in basis C using the transition matrix. Let's denote the vectors in basis C as c₁, c₂, and c₃:
c₁ = (1, -1, 1)
c₂ = (2, 0, 1)
c₃ = (1, -1, 1)
To find the coordinates of u₁ in basis C, we can solve the equation:
(1, 1, 2) = a₁c₁ + a₂c₂ + a₃c₃
Using the transition matrix, we can rewrite this equation as:
(1, 1, 2) = a₁(1, -1, 1) + a₂(2, 0, 1) + a₃(1, -1, 1)
Simplifying, we get:
(1, 1, 2) = (a₁ + 2a₂ + a₃, -a₁, a₁ + a₂ + a₃)
Equating the corresponding components, we have the following system of equations:
a₁ + 2a₂ + a₃ = 1
-a₁ = 1
a₁ + a₂ + a₃ = 2
Solving this system, we find a₁ = -1, a₂ = 0, and a₃ = 2.
Therefore, u₁ = -1c₁ + 0c₂ + 2c₃
= (-1, 1, 0).
Similarly, we can find the coordinates of u₂ and u₃:
u₂ = 2c₁ - c₂ + c₃
= (2, 3, 1)
u₃ = c₁ + c₃
= (2, 0, 2)
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Find the points on the cone 2² = x² + y² that are closest to the point (-1, 3, 0). Please show your answers to at least 4 decimal places.
The cone equation is given by 2² = x² + y².Using the standard Euclidean distance formula, the distance between two points P(x1, y1, z1) and Q(x2, y2, z2) is given by :
√[(x2−x1)²+(y2−y1)²+(z2−z1)²]Let P(x, y, z) be a point on the cone 2² = x² + y² that is closest to the point (-1, 3, 0). Then we need to minimize the distance between the points P(x, y, z) and (-1, 3, 0).We will use Lagrange multipliers. The function to minimize is given by : F(x, y, z) = (x + 1)² + (y - 3)² + z²subject to the constraint :
G(x, y, z) = x² + y² - 2² = 0. Then we have : ∇F = λ ∇G where ∇F and ∇G are the gradients of F and G respectively and λ is the Lagrange multiplier. Therefore we have : ∂F/∂x = 2(x + 1) = λ(2x) ∂F/∂y = 2(y - 3) = λ(2y) ∂F/∂z = 2z = λ(2z) ∂G/∂x = 2x = λ(2(x + 1)) ∂G/∂y = 2y = λ(2(y - 3)) ∂G/∂z = 2z = λ(2z)From the third equation, we have λ = 1 since z ≠ 0. From the first equation, we have : (x + 1) = x ⇒ x = -1 .
From the second equation, we have : (y - 3) = y/2 ⇒ y = 6zTherefore the points on the cone that are closest to the point (-1, 3, 0) are given by : P(z) = (-1, 6z, z) and Q(z) = (-1, -6z, z)where z is a real number. The distances between these points and (-1, 3, 0) are given by : DP(z) = √(1 + 36z² + z²) and DQ(z) = √(1 + 36z² + z²)Therefore the minimum distance is attained at z = 0, that is, at the point (-1, 0, 0).
Hence the points on the cone that are closest to the point (-1, 3, 0) are (-1, 0, 0) and (-1, 0, 0).
Let P(x, y, z) be a point on the cone 2² = x² + y² that is closest to the point (-1, 3, 0). Then we need to minimize the distance between the points P(x, y, z) and (-1, 3, 0).We will use Lagrange multipliers. The function to minimize is given by : F(x, y, z) = (x + 1)² + (y - 3)² + z²subject to the constraint : G(x, y, z) = x² + y² - 2² = 0. Then we have :
∇F = λ ∇Gwhere ∇F and ∇G are the gradients of F and G respectively and λ is the Lagrange multiplier.
Therefore we have : ∂F/∂x = 2(x + 1) = λ(2x) ∂F/∂y = 2(y - 3) = λ(2y) ∂F/∂z = 2z = λ(2z) ∂G/∂x = 2x = λ(2(x + 1)) ∂G/∂y = 2y = λ(2(y - 3)) ∂G/∂z = 2z = λ(2z).
From the third equation, we have λ = 1 since z ≠ 0. From the first equation, we have : (x + 1) = x ⇒ x = -1 .
From the second equation, we have : (y - 3) = y/2 ⇒ y = 6zTherefore the points on the cone that are closest to the point (-1, 3, 0) are given by : P(z) = (-1, 6z, z) and Q(z) = (-1, -6z, z)where z is a real number. The distances between these points and (-1, 3, 0) are given by : DP(z) = √(1 + 36z² + z²) and DQ(z) = √(1 + 36z² + z²).
Therefore the minimum distance is attained at z = 0, that is, at the point (-1, 0, 0). Hence the points on the cone that are closest to the point (-1, 3, 0) are (-1, 0, 0) and (-1, 0, 0).
The points on the cone 2² = x² + y² that are closest to the point (-1, 3, 0) are (-1, 0, 0) and (-1, 0, 0).
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For vectors x = [3,3,-1] and y = [-3,1,2], verify that the following formula is true: (4 marks) 1 1 x=y=x+y|²₁ Tx-³y|² b) Prove that this formula is true for any two vectors in 3-space. (4 marks)
We are given vectors x = [3, 3, -1] and y = [-3, 1, 2] and we need to verify whether the formula (1 + 1)x·y = x·x + y·y holds true. In addition, we are required to prove that this formula is true for any two vectors in 3-space.
(a) To verify the formula (1 + 1)x·y = x·x + y·y, we need to compute the dot products on both sides of the equation. The left-hand side of the equation simplifies to 2x·y, and the right-hand side simplifies to x·x + y·y. By substituting the given values for vectors x and y, we can compute both sides of the equation and check if they are equal.
(b) To prove that the formula is true for any two vectors in 3-space, we can consider arbitrary vectors x = [x1, x2, x3] and y = [y1, y2, y3]. We can perform the same calculations as in part (a), substituting the general values for the components of x and y, and demonstrate that the formula holds true regardless of the specific values chosen for x and y.
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Find the derivative of h(x) = (-4x - 2)³ (2x + 3) You should leave your answer in factored form. Do not include "h'(z) =" in your answer. Provide your answer below: 61(2x+1)2-(x-1) (2x+3)
Thus, the derivative of h(x) is -20(x + 1)⁴. The answer is factored.
Given function, h(x) = (-4x - 2)³ (2x + 3)
In order to find the derivative of h(x), we can use the following formula of derivative of product of two functions that is, (f(x)g(x))′ = f′(x)g(x) + f(x)g′(x)
where, f(x) = (-4x - 2)³g(x)
= (2x + 3)
∴ f′(x) = 3[(-4x - 2)²](-4)g′(x)
= 2
So, the derivative of h(x) can be found by putting the above values in the given formula that is,
h(x)′ = f′(x)g(x) + f(x)g′(x)
= 3[(-4x - 2)²](-4) (2x + 3) + (-4x - 2)³ (2)
= (-48x² - 116x - 54) (2x + 3) + (-4x - 2)³ (2)
= (-48x² - 116x - 54) (2x + 3) + (-4x - 2)³ (2)(2x + 1)
Now, we can further simplify it as:
h(x)′ = (-48x² - 116x - 54) (2x + 3) + (-4x - 2)³ (2)(2x + 1)
= [2(-24x² - 58x - 27) (2x + 3) - 2(x + 1)³ (2)(2x + 1)]
= [2(x + 1)³ (-24x - 11) - 2(x + 1)³ (2)(2x + 1)]
= -2(x + 1)³ [(2)(2x + 1) - 24x - 11]
= -2(x + 1)³ [4x + 1 - 24x - 11]
= -2(x + 1)³ [-20x - 10]
= -20(x + 1)³ (x + 1)
= -20(x + 1)⁴
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The specified solution ysp = is given as: -21 11. If y=Ae¹ +Be 2¹ is the solution of a homogenous second order differential equation, then the differential equation will be: 12. If the general solution is given by YG (At+B)e' +sin(t), y(0)=1, y'(0)=2, the specified solution | = is:
The specified solution ysp = -21e^t + 11e^(2t) represents a particular solution to a second-order homogeneous differential equation. To determine the differential equation, we can take the derivatives of ysp and substitute them back into the differential equation. Let's denote the unknown coefficients as A and B:
ysp = -21e^t + 11e^(2t)
ysp' = -21e^t + 22e^(2t)
ysp'' = -21e^t + 44e^(2t)
Substituting these derivatives into the general form of a second-order homogeneous differential equation, we have:
a * ysp'' + b * ysp' + c * ysp = 0
where a, b, and c are constants. Substituting the derivatives, we get:
a * (-21e^t + 44e^(2t)) + b * (-21e^t + 22e^(2t)) + c * (-21e^t + 11e^(2t)) = 0
Simplifying the equation, we have:
(-21a - 21b - 21c)e^t + (44a + 22b + 11c)e^(2t) = 0
Since this equation must hold for all values of t, the coefficients of each term must be zero. Therefore, we can set up the following system of equations:
-21a - 21b - 21c = 0
44a + 22b + 11c = 0
Solving this system of equations will give us the values of a, b, and c, which represent the coefficients of the second-order homogeneous differential equation.
Regarding question 12, the specified solution YG = (At + B)e^t + sin(t) does not provide enough information to determine the specific values of A and B. However, the initial conditions y(0) = 1 and y'(0) = 2 can be used to find the values of A and B. By substituting t = 0 and y(0) = 1 into the general solution, we can solve for A. Similarly, by substituting t = 0 and y'(0) = 2, we can solve for B.
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A fundamental set of solutions for the differential equation (D-2)¹y = 0 is A. {e², ze², sin(2x), cos(2x)}, B. (e², ze², zsin(2x), z cos(2x)}. C. (e2, re2, 2²², 2³e²²}, D. {z, x², 1,2³}, E. None of these. 13. 3 points
The differential equation (D-2)¹y = 0 has a fundamental set of solutions {e²}. Therefore, the answer is None of these.
The given differential equation is (D - 2)¹y = 0. The general solution of this differential equation is given by:
(D - 2)¹y = 0
D¹y - 2y = 0
D¹y = 2y
Taking Laplace transform of both sides, we get:
L {D¹y} = L {2y}
s Y(s) - y(0) = 2 Y(s)
(s - 2) Y(s) = y(0)
Y(s) = y(0) / (s - 2)
Taking the inverse Laplace transform of Y(s), we get:
y(t) = y(0) e²t
Hence, the general solution of the differential equation is y(t) = c1 e²t, where c1 is a constant. Therefore, the fundamental set of solutions for the given differential equation is {e²}. Therefore, the answer is None of these.
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e Suppose log 2 = a and log 3 = c. Use the properties of logarithms to find the following. log 32 log 32 = If x = log 53 and y = log 7, express log 563 in terms of x and y. log,63 = (Simplify your answer.)
To find log 32, we can use the property of logarithms that states log a^b = b log a.
log 563 = 3 log 5 + log 7
Since x = log 53 and y = log 7, we can substitute logarithms these values in:
log 563 = 3x + y
Therefore, log 563 = 3x + y.
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Find the area of the region under the curve y=f(z) over the indicated interval. f(x) = 1 (z-1)² H #24 ?
The area of the region under the curve y = 1/(x - 1)^2, where x is greater than or equal to 4, is 1/3 square units.
The area under the curve y = 1/(x - 1)^2 represents the region between the curve and the x-axis. To calculate this area, we integrate the function over the given interval. In this case, the interval is x ≥ 4.
The indefinite integral of f(x) = 1/(x - 1)^2 is given by:
∫(1/(x - 1)^2) dx = -(1/(x - 1))
To find the definite integral over the interval x ≥ 4, we evaluate the antiderivative at the upper and lower bounds:
∫[4, ∞] (1/(x - 1)) dx = [tex]\lim_{a \to \infty}[/tex](-1/(x - 1)) - (-1/(4 - 1)) = 0 - (-1/3) = 1/3.
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The complete question is:
Find the area of the region under the curve y=f(x) over the indicated interval. f(x) = 1 /(x-1)² where x is greater than equal to 4?
Use the given conditions to write an equation for the line in standard form. Passing through (2,-5) and perpendicular to the line whose equation is 5x - 6y = 1 Write an equation for the line in standard form. (Type your answer in standard form, using integer coefficients with A 20.)
The equation of the line, in standard form, passing through (2, -5) and perpendicular to the line 5x - 6y = 1 is 6x + 5y = -40.
To find the equation of a line perpendicular to the given line, we need to determine the slope of the given line and then take the negative reciprocal to find the slope of the perpendicular line. The equation of the given line, 5x - 6y = 1, can be rewritten in slope-intercept form as y = (5/6)x - 1/6. The slope of this line is 5/6.
Since the perpendicular line has a negative reciprocal slope, its slope will be -6/5. Now we can use the point-slope form of a line to find the equation. Using the point (2, -5) and the slope -6/5, the equation becomes:
y - (-5) = (-6/5)(x - 2)
Simplifying, we have:
y + 5 = (-6/5)x + 12/5
Multiplying through by 5 to eliminate the fraction:
5y + 25 = -6x + 12
Rearranging the equation:
6x + 5y = -40 Thus, the equation of the line, in standard form, passing through (2, -5) and perpendicular to the line 5x - 6y = 1 is 6x + 5y = -40.
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Find the derivative function f' for the following function f. b. Find an equation of the line tangent to the graph of f at (a,f(a)) for the given value of a. f(x) = 2x² + 10x +9, a = -2 a. The derivative function f'(x) =
The equation of the line tangent to the graph of f at (a,f(a)) for the given value of a is y=4x-9.
Given function f(x) = 2x² + 10x +9.The derivative function of f(x) is obtained by differentiating f(x) with respect to x. Differentiating the given functionf(x) = 2x² + 10x +9
Using the formula for power rule of differentiation, which states that \[\frac{d}{dx} x^n = nx^{n-1}\]f(x) = 2x² + 10x +9\[\frac{d}{dx}f(x) = \frac{d}{dx} (2x^2+10x+9)\]
Using the sum and constant rule, we get\[\frac{d}{dx}f(x) = \frac{d}{dx} (2x^2)+\frac{d}{dx}(10x)+\frac{d}{dx}(9)\]
We get\[\frac{d}{dx}f(x) = 4x+10\]
Therefore, the derivative function of f(x) is f'(x) = 4x + 10.2.
To find the equation of the tangent line to the graph of f at (a,f(a)), we need to find f'(a) which is the slope of the tangent line and substitute in the point-slope form of the equation of a line y-y1 = m(x-x1) where (x1, y1) is the point (a,f(a)).
Using the derivative function f'(x) = 4x+10, we have;f'(a) = 4a + 10 is the slope of the tangent line
Substituting a=-2 and f(-2) = 2(-2)² + 10(-2) + 9 = -1 as x1 and y1, we get the point-slope equation of the tangent line as;y-(-1) = (4(-2) + 10)(x+2) ⇒ y = 4x - 9.
Hence, the equation of the line tangent to the graph of f at (a,f(a)) for the given value of a is y=4x-9.
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A company uses a linear model to depreciate the value of one of their pieces of machinery. When the machine was 2 years old, the value was $4.500, and after 5 years the value was $1,800 a. The value drops $ per year b. When brand new, the value was $ c. The company plans to replace the piece of machinery when it has a value of $0. They will replace the piece of machinery after years.
The value drops $900 per year, and when brand new, the value was $6,300. The company plans to replace the machinery after 7 years when its value reaches $0.
To determine the depreciation rate, we calculate the change in value per year by subtracting the final value from the initial value and dividing it by the number of years: ($4,500 - $1,800) / (5 - 2) = $900 per year. This means the value of the machinery decreases by $900 annually.
To find the initial value when the machinery was brand new, we use the slope-intercept form of a linear equation, y = mx + b, where y represents the value, x represents the number of years, m represents the depreciation rate, and b represents the initial value. Using the given data point (2, $4,500), we can substitute the values and solve for b: $4,500 = $900 x 2 + b, which gives us b = $6,300. Therefore, when brand new, the value of the machinery was $6,300.
The company plans to replace the machinery when its value reaches $0. Since the machinery depreciates by $900 per year, we can set up the equation $6,300 - $900t = 0, where t represents the number of years. Solving for t, we find t = 7. Hence, the company plans to replace the piece of machinery after 7 years.
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If a = (3,4,6) and b= (8,6,-11), Determine the following: a) a + b b) -4à +86 d) |3a-4b| Question 3: If point A is (2,-1, 6) and point B (1, 9, 6), determine the following a) AB b) AB c) BA
The absolute value of the difference between 3a and 4b is √1573. The values of a + b = (11, 10, -5), -4a + 86 = (74, 70, 62), and |3a - 4b| = √1573.
Given the vectors a = (3,4,6) and b = (8,6,-11)
We are to determine the following:
(a) The sum of two vectors is obtained by adding the corresponding components of each vector. Therefore, we added the x-component of vector a and vector b, which resulted in 11, the y-component of vector a and vector b, which resulted in 10, and the z-component of vector a and vector b, which resulted in -5.
(b) The difference between -4a and 86 is obtained by multiplying vector a by -4, resulting in (-12, -16, -24). Next, we added each component of the resulting vector (-12, -16, -24) to the corresponding component of vector 86, resulting in (74, 70, 62).
(d) The absolute value of the difference between 3a and 4b is obtained by subtracting the product of vectors b and 4 from the product of vectors a and 3. Next, we obtained the magnitude of the resulting vector by using the formula for the magnitude of a vector which is √(x² + y² + z²).
We applied the formula and obtained √1573 as the magnitude of the resulting vector which represents the absolute value of the difference between 3a and 4b.
Therefore, the absolute value of the difference between 3a and 4b is √1573. Hence, we found that
a + b = (11, 10, -5)
-4a + 86 = (74, 70, 62), and
|3a - 4b| = √1573
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Let B = -{Q.[3³]} = {[4).8} Suppose that A = → is the matrix representation of a linear operator T: R² R2 with respect to B. (a) Determine T(-5,5). (b) Find the transition matrix P from B' to B. (c) Using the matrix P, find the matrix representation of T with respect to B'. and B
The matrix representation of T with respect to B' is given by T' = (-5/3,-1/3; 5/2,1/6). Answer: (a) T(-5,5) = (-5,5)A = (-5,5)(-4,2; 6,-3) = (10,-20).(b) P = (-2,-3; 0,-3).(c) T' = (-5/3,-1/3; 5/2,1/6).
(a) T(-5,5)
= (-5,5)A
= (-5,5)(-4,2; 6,-3)
= (10,-20).(b) Let the coordinates of a vector v with respect to B' be x and y, and let its coordinates with respect to B be u and v. Then we have v
= Px, where P is the transition matrix from B' to B. Now, we have (1,0)B'
= (0,-1; 1,-1)(-4,2)B
= (-2,0)B, so the first column of P is (-2,0). Similarly, we have (0,1)B'
= (0,-1; 1,-1)(6,-3)B
= (-3,-3)B, so the second column of P is (-3,-3). Therefore, P
= (-2,-3; 0,-3).(c) The matrix representation of T with respect to B' is C
= P⁻¹AP. We have P⁻¹
= (-1/6,1/6; -1/2,1/6), so C
= P⁻¹AP
= (-5/3,-1/3; 5/2,1/6). The matrix representation of T with respect to B' is given by T'
= (-5/3,-1/3; 5/2,1/6). Answer: (a) T(-5,5)
= (-5,5)A
= (-5,5)(-4,2; 6,-3)
= (10,-20).(b) P
= (-2,-3; 0,-3).(c) T'
= (-5/3,-1/3; 5/2,1/6).
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