Let V1 = (1,2,0)^T, V2 = (2,4,2)^T, and V3 = (0,2,7)T and A = [V1,V2,V3]
Let V1 = (1,2,0)^T, V2 = (2,4,2)^T, and V3 = (0,2,7)T and A = [V1,V2,V3] 5)...
An orthogonal basis for the column space of matrix A is {V1 , V2 ,V3) Use this orthogonal basis to find a QR factorization of matrix A Q = _______ , R = _______
(1 point) Are the following statements true or false? ? 1. If W = Span{V1, V2, V3 }, and if {V1, V2, V3 } is an orthogonal set in W, then {V1, V2, V3 } is an orthonormal basis for W. ? 2. If x is not in a subspace W, projw(x) is not zero. then x ? 3. In a QR factorization, say A = QR (when A has linearly independent columns), the columns of Q form an orthonormal...
4. Consider 3 linearly independent vectors V1, V2, V3 E R3 and 3 arbi- trary numbers dı, d2, d3 € R. (i) Show that there is a matrix A E M3(R), and only one, with eigenvalues dı, d2, d3 and corresponding eigenvectors V1, V2, V3. (ii) Show that if {V1, V2, V3} is an orthonormal set of vectors. then the matrix A is symmetric.
- Given: V1 = H. V2 = - - - , V3 = Show that S = {V1, V2, V3} is a basis for Rº and then construct an orthonormal basis {U1, U2, U3}.
חו (1 point) Suppose V1, V2, V3 is an orthogonal set of vectors in R Let w be a vector in span(V1, V2, V3) such that (v1,vi) = 24, (v2,v2) = 21, (V3, V3) = 9, (w,v) 120, (w, v2) = 147, (w,v3) -36, Vi+ V2+ then w= V3.
1. Consider the following three vectors in R Vi (1,-1,-11), v2 (3,0,-3,2), v3- (4,0,-2,2) (a) Perform the Gram-Schmidt process to find an orthonormal basis [ei,e2,e3j of the subspace spanned by {vi, V2, V3) (b) Find the QR decomposition of the following matrix A QR: 412 922 231 12 113 q13 q23 43300 14 924 934 -1 0 0 0 122 r23 Relate (rij] to the Gram-Schmidt process. (c) Can you say anything about either Qor without calculation? Show that ATA...
please give the correct answer with explanations, thank you Let S {V1, V2, V3, V4, Vs} be a set of five vectors in R] Let W-span) When these vectors are placed as columns into a matrix A as A-(V2 V3 r. ws). and Asrow-reduced to echelon form U. we have U - -1 1 013 001 1 state the dimension of W Number 2. State a boss B for W using the standard algorithm, using vectors with a small as...
5. Let T E Rxn be a nonsingular symmetric tridiagonal matrix, T -QR be a QR factorization of T and S- RQ. (a) Show that S is also a nonsingular symmetric tridiagonal matrix. (b) How many operations (addition, subtraction, multiplication, and division) are required to ob- tain S from T? 5. Let T E Rxn be a nonsingular symmetric tridiagonal matrix, T -QR be a QR factorization of T and S- RQ. (a) Show that S is also a nonsingular...
-9 2. Let Vi-8.V2,andvs-2, let B -(V,V2,Vs), and let W be the subspace spanned , let B -(Vi,V2,V3), and let W be the subspace spanned by B. Note that B is an orthogonal set. 17 a. 1 point] Find the coordinates of uwith respect to B, without inverting any matrices or L-2 solving any systems of linear equations. 35 16 25 b. 1 point Find the orthogonal projection of to W, without inverting any matrices or solving any systems of...
Let H = Span{V1, V2} and K = Span{V3,V4}, where V1, V2, V3, and V4 are given below. 1 V1 V2 V4 - 10 7 9 3 -6 Then Hand K are subspaces of R3. In fact, H and K are planes in R3 through the origin, and they intersect in a line through 0. Find a nonzero vector w that generates that line. W= [Hint: w can be written as C1 V2 + c2V2 and also as c3 V3...