3. (15 pts.) Let A e Rmxn be a full rank matrix, m > n. Suppose that Let r = Ax-b. Prove that reprthogonal to Az minimizes llAz-b12.
3. (15 pts.) Let A e Rmxn be a full rank matrix, m > n. Suppose that Let r = Ax-b. Prove that reprthogonal to Az minimizes llAz-b12.
In the vector space R, let 8 {(1,3,0), (1, -3, 0), (0, 2, 2)}. (a) (6 points) Show that y is a basis of R3. (b) (7 points) Find the matrix [I,where I is the identity transform R3 R3 (c) (7 points) Using the matrix [I, convert the vector (r, y, z) into coordinates with respect to y instead of B. In other words, find ((x, y, z)] {(1,0,0), (0, 1,0), (0,0, 1)} be the standard basis, and let
5. Let (a) (2 marks) Find all eigenvalues of A (b) (4 marks) Find an orthonormal basis for each eigenspace of A (you may find an orthonormal basis by inspection or use the Gram-Schmidt algorithm on each eigenspace) (c) (2 marks) Deduce that A is orthogonally diagonalizable. Write down an orthogonal matrix P and a diagonal matrix D such that D P-AP. (d) (1 mark) Use the fact that P is an orthogonal matrix to find P-1 (e) (2 marks)...
[M2] Let -1] 2 A = 2 1 -2 3 (a) Find A-1, (b) Use the inverse matrix above to solve the system -2x1 + 2x2 – x3 2, X1 + x2 + 2x3 = -1, 2^1 — 2л2 + 3х3 — 5. (c) Write the following matrix A as a product of elementary matrices. |0 A = |1 -2 0 3 5
3 Find c,c2, and c such that M3 M2 Ms 0, where Is is the identity 3 x 3 (1 point) Let M-0 matrix. CI = C3=
Consider the system shown. Let m-1; m2-2, k-4,b-2,p 5sin (3t) X1(s) a) Find the transfer functions G1(s) - b) Find the steady state outputs x1ss(s), x2(s) X2(s) F(s) pt) mi 112 m2 1s
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(1 pt) 1 0 Let/ = 184 Find an invertible matrix P and a diagonal matrix D such that PDPA D= (1 pt) 1 5 -15 LetA=10-1 6 0-1 4 Find an invertible matrix P and a diagonal matrix D such that D = p- D=
(1 pt) 1 0 Let/ = 184 Find an invertible matrix P and a diagonal matrix D such that PDPA D=
(1 pt) 1 5 -15 LetA=10-1 6 0-1 4 Find an...
Question B
7. (a) Let -1 0 0 (i) Find a unitary matrix U such that M-UDU where D is a diagonal matrix. 10 marks] (i) Compute the Frobenius norm of M, i.e., where (A, B) = trace(B·A). [4 marks] 3 marks] (iii) What is NM-illp? (b) Let H be an n × n complex matrix (6) What does it mean to say that H is positive semidefinite. (il) Show that H is positive semidefinite and Hermitian if and only...
Problem 5 Let U be an n dimensional vector space and T E L(U,U). Let I denote the identity transformation I(u) = u for each u EU and let 0 denote the zero transformation. Show that there is a natural number N, and constants C1, ..., CN+1 such that C1I + c2T + ... + CN+1TN = 0 (Hint: Given dim(U) = n, what is the dimension of L(U,U)? consider ciI + c2T + ... + Cn+11'" = 0, where...
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At least one of the answers above is NOT correct. 2 1 (1 pt) Let M 2 5 Find formulas for the entries of M", where n is a positive integer. M" Note: You can earn partial credit on this problem.
At least one of the answers above is NOT correct. 2 1 (1 pt) Let M 2 5 Find formulas for the entries of M", where n is a positive integer. M" Note:...