1.

Compute the inverse of the following matrix​

Answer»

ANSWER: 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.

Explanation:



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