Question: Use Corollary 4.11 to decide if each matrix has an inverse. Corollary 4.11 The inverse for a 2 Ã 2 matrix exists and equals if

Use Corollary 4.11 to decide if each matrix has an inverse.
Corollary 4.11
The inverse for a 2 × 2 matrix exists and equals

Use Corollary 4.11 to decide if each matrix has an

if and only if ad - bc ‰  0.
(a)

Use Corollary 4.11 to decide if each matrix has an

(b)

Use Corollary 4.11 to decide if each matrix has an

(c)

Use Corollary 4.11 to decide if each matrix has an

a b c d d -b ad bcc a 4 3 0 2 3 -4 6

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