(2) Find a matrix A such that P = A (ATA) AT is the projection matrix...
5.4. Find the matrix of the orthogonal projection in R2 onto the line x1 = –2x2. Hint: What is the matrix of the projection onto the coordinate axis x1? Problem 5. Problem 5.4 on page 23. The following method is suggested: (1) Find an angle o such that the line x1 = –2x2 is obtained by rotating the x-axis by 0. (2) Convince yourself with geometry that to project a vector v onto the line x1 = –2x2 is the...
What is the matrix P (P,) for the projection of R3 onto the subspace V spanned by the vectors 0 Pi3 12 P2 1 23 - P33 3 1 4 What is the projection p of the vector b-5 onto this subspace? Pi P2 Ps What is the matrix P (P,) for the projection of R3 onto the subspace V spanned by the vectors 0 Pi3 12 P2 1 23 - P33 3 1 4 What is the projection p...
6. Find the matrix P that projects vectors in R4 onto the column space of each matrix. 2 1 [BB]A= 1-21 0 1 (b) A= | 0 1 1 -1 (a) 1131 0101 1011 1231 1112 6. Find the matrix P that projects vectors in R4 onto the column space of each matrix. 2 1 [BB]A= 1-21 0 1 (b) A= | 0 1 1 -1 (a) 1131 0101 1011 1231 1112
For the 3×2 matrix A: a) Determine the eigenvalues of ATA, and confirm that your eigenvalues are consistent with the trace and determinant of ATA. b) Find an eigenvector for each eigenvalue of ATA. c) Find an invertible matrix P and a diagonal matrix D such that P-1(ATA)P = D. d) Find the singular value decomposition of the matrix A; that is, find matrices U, Σ, and V such that A = UΣVT. e) What is the best rank 1...
(1 point) What is the matrix P-(P) for the projection of a vector b є R3 onto the subspace spanned by the vector a- ? 5 9 Pl 3 1 2 P21 23 - P32 31 What is the projection p of the vector b0onto this subspace? 9 Pl Check your answer for p against the formula for p on page 208 in Strang. (1 point) What is the matrix P-(P) for the projection of a vector b є R3...
Problem 7. Let P R2 -> R2 be the orthogonal projection onto the line Li Let P2 R2 R2 be the orthogonal projection onto the line L2: x32 2r2 0. 0. (1) What are the image and kernel of P2P What is the rank of P2P? Give a geometric description, without relying on the matrix of P2P (2) Find the matrix that represents P2P Problem 7. Let P R2 -> R2 be the orthogonal projection onto the line Li Let...
22. (a) Find two vectors that span the null space of A 3 -1 2 -4 (b) Use the result of part (a) to find the matrix that projects vectors onto the null space of A. (c) Find two orthogonal vectors that span the null space of A. (d) Use the result of (c) to find the matrix that projects vectors onto the nul space of A. Compare this matrix with the one found in part (a). (e) Find the...
L2 pt) Let P be the projection matrix that projects vectors onto C(A). Show that (I- P)2 projects vectors onto N(AT). L2 pt) Let P be the projection matrix that projects vectors onto C(A). Show that (I- P)2 projects vectors onto N(AT).
L2 pt) Let P be the projection matrix that projects vectors onto C(A). Show that (I- P)2 projects vectors onto N(AT). L2 pt) Let P be the projection matrix that projects vectors onto C(A). Show that (I- P)2 projects vectors onto N(AT).
17. The standard matrix of the the linear transformation that represents projection onto the vector 1 m onto the vector (9)}{-1 9 ®}1] (0}{-1) none of these [1 2 3] 18. The matrix O O 5 can be reduced (using elementary row operations) to [2 4 0 100] [120] 1 007 (A) 0 1 0 (B) 0 1 0 (0) 0 1 0 (D) none of these LO 0 1 LO 0 0 Lo o o 19. Which of the...