Suppose that B = {V₁, V2,..., Vk) is an orthonormal basis for a subspace W of R". Let C be the nx k matrix whose columns are the vectors in B. Prove the following statements: (a) CTC = Ik. (b) Pw = CCT.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.3: Vectors
Problem 11E
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75. Suppose that B = {V₁, V₂,V) is an orthonormal basis
for a subspace W of R". Let C be the nxk matrix
whose columns are the vectors in B. Prove the following
statements:
(a) CTC = Ik.
(b) Pw = CCT.
Transcribed Image Text:75. Suppose that B = {V₁, V₂,V) is an orthonormal basis for a subspace W of R". Let C be the nxk matrix whose columns are the vectors in B. Prove the following statements: (a) CTC = Ik. (b) Pw = CCT.
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