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tiffanyvazquez
The Inverse of A is A-1 only when A × A-1 = A-1 × A = I.
To find the Inverse of a 2x2 Matrix: swap the positions of a and d, put negatives in front of b and c, and divide everything by the determinant (ad-bc).
Sometimes there is no Inverse at all.

Well, for a 2x2 Matrix the Inverse is:


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