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10 Nov 2019
1. (a) Let A be a square matrix. Suppose there is a vector b such that Ax b has no solution. Is A invertible? (b) Let A be a 3 x 3 matrix and suppose that AA )A ). Is invertible? (c) Let A be a 5 Ã 5 matrix such that A2 +4A-1 = O. How many I O. How many solutions does the system Ax = 0 have?
1. (a) Let A be a square matrix. Suppose there is a vector b such that Ax b has no solution. Is A invertible? (b) Let A be a 3 x 3 matrix and suppose that AA )A ). Is invertible? (c) Let A be a 5 Ã 5 matrix such that A2 +4A-1 = O. How many I O. How many solutions does the system Ax = 0 have?
Jamar FerryLv2
3 May 2019