Determine if the statements are true or false. Let A be an n x n matrix. 1. For each vector y and each subspace S, the vector y - proję (y) is orthgonal to S. 2. If the columns of an n x p matrix U are orthonormal, then UTUy is the orthogonal projection of y onto the colum False 3. For any scalar c, ||cv|| = = cl|v||. True True False 4. For any matrix A, vectors in R(A) are orthogonal to vectors in N(A).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Determine if the statements are true or false. Let A be an n x n matrix.
1. For each vector y and each subspace S, the vector y - proję (y) is orthgonal to S.
2. If the columns of an n x p matrix U are orthonormal, then UTUy is the orthogonal projection of y onto the column space of U.
False 3. For any scalar c, ||cv|| = c||v||.
True
True
False
4. For any matrix A, vectors in R(A) are orthogonal to vectors in N(A).
Transcribed Image Text:Determine if the statements are true or false. Let A be an n x n matrix. 1. For each vector y and each subspace S, the vector y - proję (y) is orthgonal to S. 2. If the columns of an n x p matrix U are orthonormal, then UTUy is the orthogonal projection of y onto the column space of U. False 3. For any scalar c, ||cv|| = c||v||. True True False 4. For any matrix A, vectors in R(A) are orthogonal to vectors in N(A).
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