The Inverse of a 2 × 2 Matrix Use a graphing calculator to find the inverse of the matrix and to verify that A−1A = AA−1 = I2 and B−1B = BB−1 = I3. (On a TI-83, use the ▸ F r a c command to obtain the answer in fractions.)
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PRECALCULUS: MATHEMATICS FOR CALCULUS
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