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Unformatted text preview: A to solve 3 6 9152555 21 57 40 x 1 x 2 x 3 = 35070 . (c) Find the LDU factorization of A . 5. (15 points) True or False (a) For any n x n matrices A and B we have BA = ( AB ). (b) If A is not invertible matrix then the equation ABx = always has more than one solution. (c) If A and B are upper triangular n x n matrices then AB is an upper triangular matrix. (d) If A is any diagonal n x n matrix and B is any n x n matrix then AB = BA . (e) If A is an n x n matrix and the linear system Ax = b has two distinct solutions then A is not invertible....
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 Spring '08
 Johnson,G
 Linear Algebra, Algebra, nxn matrix, nxn matrices, Numerical Linear Algebra Practice Test, diagonal nxn matrix

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