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OpenStudy (anonymous):
is inversion of 2*2 matrix different from 3*3 matrix?
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OpenStudy (amistre64):
no
OpenStudy (amistre64):
determine the cofactor matrix, transpose it, divide elements by the determinant of the original, and you have your inverse
OpenStudy (amistre64):
or augment next to the identity to rref into an inverse
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