Question: 2. The 3 x 3 matrices A and B are defined in terms of a scalar constant k by 2 9 2+m] 1+m -3 k

2. The 3 x 3 matrices A and B are defined in terms of a scalar constant k by 2 9 2+m] 1+m -3 k and k 2 -1 k 0 B = A = 1 4 1 1 15 -1 1 a. Find an expression for det A, in terms of k. b. Find the possible values of k given that AB is singular

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