Question

what is the formula of a inverse​

Answer 1

In the MATRIX INVERSE METHOD (unlike Gauss/Jordan), we solve for the matrix variable X by left-multiplying both sides of the above matrix equation (AX=B) by A-1. Typically, A-1 is calculated as a separate exercize ; otherwise, we must pause here to calculate A-1. ... Note: A-1 is on the LEFT side of both products.

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Answer 2

Answer:

OK, how do we calculate the inverse? In other words: swap the positions of a and d, put negatives in front of b and c, and divide everything by the determinant (ad-bc).

Step-by-step explanation:

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