Question: For each invertible matrix in the prior problem, use Corollary 4.11 to find its inverse. Corollary 4.11 The inverse for a 2 Ã 2 matrix

For each invertible matrix in the prior problem, use Corollary 4.11 to find its inverse.
Corollary 4.11
The inverse for a 2 Ã— 2 matrix exists and equals

if and only if ad - bc ‰ 0.

a b c d d -b ad bcc a

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