Homework Answers
2. Consider the matrix (a) By hand, find the eigenvalues and eigenvectors of A. Please obtain...
2. Consider the matrix (a) By hand, find the eigenvalues and eigenvectors of A. Please obtain eigenvectors of unit length. (b) Using the eigen function in R, verify your answers to part (a). (c) Use R to show that A is diagonalizable; that is, there exists a matrix of eigenvectors X and a diagonal matrix of eigenvalues D such that A XDX-1. The code below should help. eig <-eigen(A) #obtains the eigendecomposition and stores in the object "eig" X <-eigSvectors...
5. The determination of a 4 x 4 matrix A is 144 and two of its...
5. The determination of a 4 x 4 matrix A is 144 and two of its eigenvalues are known to be –3 and 2. What can be said about the remaining eigenvalues? 2ond Whatore the eigen
.3 Suppose the eigenvalues of a 3x3 matrix A are A, 4, , and A 6'...
.3 Suppose the eigenvalues of a 3x3 matrix A are A, 4, , and A 6' %3D with corresponding eigenvectors v,= V2= and v Let -2 -5 6. 11 Find the solution of the equation x Ax, for the specified x, and describe what happens ask-o. 13 Find the solution of the equation X1AX Choose the correct answer below. 4. 1. O A. X=2.(4)* +3. -4 1. 6. -5 -2 -3 O B. X=2.(4)* 0 +3. 1. -5 6. 11...
4.(5 pts)Give an example of a 3 x 3 matrix with eigenvalues of 2, 2, and...
4.(5 pts)Give an example of a 3 x 3 matrix with eigenvalues of 2, 2, and -3 that is diagonalizable. Show that it is, in fact, diagonalizable, and find C and D such that C (you may make this as trivial as you wish!) AC = D 5.(5 pts) Give an example of a 3 x 3 matrix with eigenvalues of 2, 2, and -3 that is NOT diagonalizable. Show WHY it is not diagonalizable. 6. (5 pts) Let T:...
Consider the 3 x 3 matrix A defined as follows 7 4-4 a) Find the eigenvalues...
Consider the 3 x 3 matrix A defined as follows 7 4-4 a) Find the eigenvalues of A. Is A singular matrix? b) Find a basis for each eigenspace. Then, determine their dimensions c) Find the eigenvalues of A10 and their corresponding eigenspaces. d) Do the eigenvectors of A form a basis for IR3? e) Find an orthogonal matrix P that diagonalizes A f) Use diagonalization to compute A 6
# 2: Consider the real symmetric matrix A= 4 1 a) What are the eigenvalues and...
# 2: Consider the real symmetric matrix A= 4 1 a) What are the eigenvalues and eigenvectors. [Hint: Use wolframalpha.] b) What is the trace of A, what is the sum of the eigenvalues of A. What is a general theorem th c) The eigenvalues of A are real. What is a general theorem which assert conditions that t d) Check that the eigenvectors are real. What is a general theorem which asserts conditions th asserts equality? eigenvalues are real...
Consider the matrix -2 -3 AE 1 -3 3 a) Find the eigenvalues of A. And...
Consider the matrix -2 -3 AE 1 -3 3 a) Find the eigenvalues of A. And the eigen vectors associated to them. b) Is A diagonalizable ? Justify your Answer.
(b) The matrix B= 1 2 2 3 3 1 3 2 4 has eigenvalues 7,2,...
(b) The matrix B= 1 2 2 3 3 1 3 2 4 has eigenvalues 7,2, -1. i. Find a column and a row eigenvector of B corresponding to the Perron eigenvalue. ii. Find a rank one nonnegative matrix C such that the matrix B+C will have eigenvalues 13, 2, -1. iii. Let a and B be real numbers. Calculate the eigenvalues of D(a, b) = aB+ BC. iv. Find limno(+B)"
6. (20') Given the 3 x 3 matrix A= 0 0 1 0 2 0 4...
6. (20') Given the 3 x 3 matrix A= 0 0 1 0 2 0 4 0 0 (a) compute ATA. (b) find all eigenvalues of ATA and their associated eigenvectors. (c) write down all singular values of A in descending order. (d) find the singular-value decomposition(SVD) A = UEVT. (e) based on the above calculation, write down the SVD for the following matrix B. (You can certainly perform all the work again if you have sufficient time but do...
0 2 The product of Eigen values of the matrix P is P=4 -3 3 0...
0 2 The product of Eigen values of the matrix P is P=4 -3 3 0 2 -1 (A) -6 (B) 2 (C) 6 (D) -2
2. Consider the matrix (a) By hand, find the eigenvalues and eigenvectors of A. Please obtain eigenvectors of unit length. (b) Using the eigen function in R, verify your answers to part (a). (c) Use R to show that A is diagonalizable; that is, there exists a matrix of eigenvectors X and a diagonal matrix of eigenvalues D such that A XDX-1. The code below should help. eig <-eigen(A) #obtains the eigendecomposition and stores in the object "eig" X <-eigSvectors...
5. The determination of a 4 x 4 matrix A is 144 and two of its eigenvalues are known to be –3 and 2. What can be said about the remaining eigenvalues? 2ond Whatore the eigen
.3 Suppose the eigenvalues of a 3x3 matrix A are A, 4, , and A 6' %3D with corresponding eigenvectors v,= V2= and v Let -2 -5 6. 11 Find the solution of the equation x Ax, for the specified x, and describe what happens ask-o. 13 Find the solution of the equation X1AX Choose the correct answer below. 4. 1. O A. X=2.(4)* +3. -4 1. 6. -5 -2 -3 O B. X=2.(4)* 0 +3. 1. -5 6. 11...
4.(5 pts)Give an example of a 3 x 3 matrix with eigenvalues of 2, 2, and -3 that is diagonalizable. Show that it is, in fact, diagonalizable, and find C and D such that C (you may make this as trivial as you wish!) AC = D 5.(5 pts) Give an example of a 3 x 3 matrix with eigenvalues of 2, 2, and -3 that is NOT diagonalizable. Show WHY it is not diagonalizable. 6. (5 pts) Let T:...
Consider the 3 x 3 matrix A defined as follows 7 4-4 a) Find the eigenvalues of A. Is A singular matrix? b) Find a basis for each eigenspace. Then, determine their dimensions c) Find the eigenvalues of A10 and their corresponding eigenspaces. d) Do the eigenvectors of A form a basis for IR3? e) Find an orthogonal matrix P that diagonalizes A f) Use diagonalization to compute A 6
# 2: Consider the real symmetric matrix A= 4 1 a) What are the eigenvalues and eigenvectors. [Hint: Use wolframalpha.] b) What is the trace of A, what is the sum of the eigenvalues of A. What is a general theorem th c) The eigenvalues of A are real. What is a general theorem which assert conditions that t d) Check that the eigenvectors are real. What is a general theorem which asserts conditions th asserts equality? eigenvalues are real...
Consider the matrix -2 -3 AE 1 -3 3 a) Find the eigenvalues of A. And the eigen vectors associated to them. b) Is A diagonalizable ? Justify your Answer.
(b) The matrix B= 1 2 2 3 3 1 3 2 4 has eigenvalues 7,2, -1. i. Find a column and a row eigenvector of B corresponding to the Perron eigenvalue. ii. Find a rank one nonnegative matrix C such that the matrix B+C will have eigenvalues 13, 2, -1. iii. Let a and B be real numbers. Calculate the eigenvalues of D(a, b) = aB+ BC. iv. Find limno(+B)"
6. (20') Given the 3 x 3 matrix A= 0 0 1 0 2 0 4 0 0 (a) compute ATA. (b) find all eigenvalues of ATA and their associated eigenvectors. (c) write down all singular values of A in descending order. (d) find the singular-value decomposition(SVD) A = UEVT. (e) based on the above calculation, write down the SVD for the following matrix B. (You can certainly perform all the work again if you have sufficient time but do...
0 2 The product of Eigen values of the matrix P is P=4 -3 3 0 2 -1 (A) -6 (B) 2 (C) 6 (D) -2
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