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OpenStudy (anonymous):
I'm given the 4x4 inverse (A^-1) of a matrix and asked to find det(A) and then compute adjA. I'm thinking I use the formula A^-1=1/det(A)(adjA) but I'm not sure
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OpenStudy (anonymous):
I'm pretty sure that's the correct formula.
OpenStudy (anonymous):
just that A^-1 is a matrix,
OpenStudy (anonymous):
...
OpenStudy (anonymous):
k [-2 1 3 1],[4 1 0 2], [1 -3 -2 5], [12 0 -7 0],
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