Solution:
It’s conjugate transepose
Now
So B is not unitary.
Let
Inner product
Since norm of is not 1 so it can not be unit vecctor
So basis is not normal in
(2/3) - (1/3)i (-1/3) + (2/3)i Let B= . Is B (2/3) (-5/3) unitary? If not,...
for the question, thanks for your help! 2. Let 2 -2 -11 1 3 S1 8 and b -2 -5 7 A= -4 5 2-9 18 Moreover, let A be the 4 x 3 matrix consisting of columns in S (a) (2.5 pt) Find an orthonormal basis for span(S). Also find the projection of b onto span(S) (b) (1.5 pt) Find the QR-decomposition of A. (c) (1 pt) Find the least square solution & such that |A - bl2 is...
3 5 1 -1 -3 1 1. Let A b 1C Col(A) 0 2 1 5 2 1 5 8 a) Find an orthonormal basis for C b) Find a QR factorization for A. c) Find b projc(b). Does b= b? What does this tell us about the number of solutions to Ax = b?
Let V be R, with thestandard inner product. If is a unitary operator on V, show that the matrix of U in the standard ordered basis is either cos θ -sin θ sin θ cos θ cos θ sin θ for some real θ, 0-θ < 2T. Let Us be the linear operator corresponding to the first matrix, i.e., Ue is rotation through the angle . Now convince yourself that every unitary operator on V is either a rotation, or...
20 3. Let 1 = 2 and = 5. Let W = Span{11, 13). (a) Give a geometric description of W. (b) Use the Gram-Schmidt process to find an orthogonal basis for W. (c) Let = 2 Find the closest point to į in W. (a) Use your orthogonal basis in part (b) to find an orthonormal basis for W.
2. in problem 5.25 b) I can not solve this problem thank you Review Exercises 309 (c) Why is eA unitary? (d) Why is eKt unitary? 5.21 (a) Find a nonzero matrix N such that N3 0. (b) If Nx = Ax, show that λ must be zero. (c) Prove that N (called a "nilpotent" matrix) cannot be symmetric 5.22 Suppose the first row of A is 7, 6 and its eigenvalues are i, -i. Find A. 5.23 If the...
2. Let A be the matrix [i 3 4 51 0 A= 1 1 1 | 1 2 -4 -5 -3 -3 -2 -1 (a) Find a basis of the column space. Find the coordinates of the dependent columns relative to this basis. (b) What is the rank of A? (c) Use the calculations in part (a) to find a basis for the row space.
2. Let A e cnxn and A BiC, where B,C E Rnxn and i -I. Denote B -C (a) Show that A is unitary if and only if M is orthogonal. (b) Show that A is Hermitian positive definite if and only if M is symmetric positive definite. (c) Suppose A is Hermitian positive definite. Design an algorithm for solving Ar-busing real arithmetic only 2. Let A e cnxn and A BiC, where B,C E Rnxn and i -I. Denote...
Note: - You are attempting question 5 out of 12 Let A be unitary matrix. For what value of k, kA is also unitary? (a) \k\=1 (b) \k\ = 2 (c) \k = 3 (d) \k} = 4 Answer A B С NG 20DLAAdvanced.png Address
linear algebra question 0. Given 1 3-5 1 1 -2 1-3 1 and b If the Gram-Schmidt process is applied to determine an orthonormal basis for R(A), and a QR factoriza- tion of A then, after the first two orthonormal vectors qi and q are computed, we have 2 -2 2 2 2 2 2 (a) Finish the process. Determine q3 and fill in the third columns of Q and R (b) Use the QR factorization to find the least...
7. Claim: Let A be an (n × n) (square) matrix. ·Claim: If A s invertible and AT = A-1 , then the columns of A form an orthonormal basis for R . Claim: If the columns of A form an orthogonal basis for Rn, then A is invertible and A A-1 . Claim: If the columns of A form an orthonormal basis for R", then A is invertible and AT= A-1 . Claim: If the columns of A form...