Question: Derive formula (3). Find a matrix for which AB = I. Solve for b 11 , b 12 , b 21 , and b 22

Derive formula (3). Find a matrix 

(b b12 B = b21 b2


for which AB = I. Solve for b11, b12, b21, and b22. Then show that BA = I.

(b b12 B = b21 b2

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