Unformatted text preview: Cofactors Concept Questions 1. Explain the diﬀerence between orthogonal matrices and orthonormal matrices. 2. Explain the diﬀerence between orthogonal and orthonormal vectors. 3. How many basis vectors are needed to describe the subspace of R 4 deﬁned by xy = 0? 4. ( T / F ) If the columns of a matrix A are linearly independent, then so will be the columns after applying the GramSchmidt process. 5. ( T / F ) If A is orthonormal, A ( A T A )1 A T = AA T . 6. ( T / F ) If the columns of A are orthonormal, then the rows of A are orthogonal. 1 TA: Kyle Wilson...
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 '05
 HUI
 Linear Algebra, Algebra, Orthogonal matrix, Orthogonal vectors, orthogonal subspaces, Kyle Wilson

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