Consider the matrix, A = 1 2 3 0 1 1 2 0 -1 -2 24 34 -1 0 a (a) Using row reduction method try to find A-¹. (b) For which values of a A-¹ exists? (b) Do you think it is possible to change any other numbers in the first three rows of A such that A¹ always exists for all non-zero values of a? If no explain why? If yes make an example.

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