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How to do? With steps pls. Thank you. 5. (20 points) Let 2 A = 2 3 (1) (10 points) Show A is invertible and

How to do? With steps pls. Thank you.

5. (20 points) Let 2 A = 2 3 (1) (10 points) Show A is invertible and find A-1. (2) (10 points) Compute det(A-3AT)

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