If is a nonsingular matrix

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

If AA is a 2×22\times2 nonsingular matrix, then adj⁡(adj⁡A)\operatorname{adj}(\operatorname{adj}A) is equal to: (a) A2A^2 (b) AA (c) A−1A^{-1} (d) (A−1)2(A^{-1})^2

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