Suppose that vi, V2, . ., Vn are linearly independent column vectors in F' and let e1, €2,..., en be the orthonormal vectors that result from the Gram-Schmidt process. (a) Show that there exist aj; E F such that: vj = aj,1€1+..ajjej +0e3;1+..+0en for each j= 1,...,n (b) Let B be the n x n matrix in F" such that column j of B is vz. Let Q be the n x n matrix in F," such that column j of Q is ej. Use your answer in (a) to find an upper triangular matrix R such that B= QR.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Suppose that v1, V2, . .., Vn are linearly independent column
vectors in F" and let e1, e2,..., en be the orthonormal
vectors that result from the Gram-Schmidt process.
(a) Show that there exist aji E F such that:
Vj = aj,1€1+.ajjej+0ej+1+...+0en
for each j = 1, ..., n.
(b) Let B be the n x n matrix in F," such that column j of
Bis vj. Let Q be the n x n matrix in F" such that column
j of Q is ej. Use your answer in (a) to find an upper
triangular matrix R such that B =QR.
Transcribed Image Text:Suppose that v1, V2, . .., Vn are linearly independent column vectors in F" and let e1, e2,..., en be the orthonormal vectors that result from the Gram-Schmidt process. (a) Show that there exist aji E F such that: Vj = aj,1€1+.ajjej+0ej+1+...+0en for each j = 1, ..., n. (b) Let B be the n x n matrix in F," such that column j of Bis vj. Let Q be the n x n matrix in F" such that column j of Q is ej. Use your answer in (a) to find an upper triangular matrix R such that B =QR.
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