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Question: let a and b be 3 times 3 matrices with...

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Question 3 (4 points Let A and B be 3 x 3 matrices, with det A 2 and det B 5. Find (a) det 3A (b) det (AB) (c) det B (d) det A-1 Question 4 (1 point) Consider the following system in which s is an unspecified parameter. Determine the values of s for which the system has a unique solution, and use Cramers rule to describe the solution. 3sz1 3r zi 3sz2 a 3

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