問題詳情
(5 points) A nxn matrix A is said to be nonsingular, if (1) A is non-invertible. (2) there exists a multiplicative inverse matix B such that A is row cquivalent to B. (3) the determinate of A is nonzero. (4) Ax=O where x is nonzero vector. (5) A is row equivalent to L
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