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OpenStudy (anonymous):
Use Gauss-Jordan reduction of (A:I) to find A^-1 The matrix is: 1 1 0/1 1 1/0 2 1 (ie 3x3 matrix) You can just write the steps ie (row 3*-0.5)+row1 I know you add the matrix on the right side with the diagonal 1's.
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