Problem 14. Let 1 3 A= 0 1 1 225 b₁ = A and b₂ = (a) Compute det A. (Note that det A # 0, and so A is invertible by the invertible matrix theorem.) (b) Find A-¹. (c) Find solutions to the matrix equations Ax₁ = b₁ and Ax₂ = b₂.

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