u,} and B= {v, V2..v} be subsets of a vector space V. If pendent, show that (A) n (B) = {0v}. wen such that the columns of Q form an orthonormal basis for R".

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
Problem 24EQ
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Choose only one and write a concise proof.
(a) Let A = {u, Uz, . .., u,} and B = {v, v2 . .., Vs} be subsets of a vector space V. If
AUB is linearly independent, show that (A) n (B) = {0v}.
%3D
%3D
(b) Let Q E M,(R) be given such that the columns of Q form an orthonormal basis for R".
Prove that Q'Q = I,.
Transcribed Image Text:Choose only one and write a concise proof. (a) Let A = {u, Uz, . .., u,} and B = {v, v2 . .., Vs} be subsets of a vector space V. If AUB is linearly independent, show that (A) n (B) = {0v}. %3D %3D (b) Let Q E M,(R) be given such that the columns of Q form an orthonormal basis for R". Prove that Q'Q = I,.
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