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If A = [(2,3),(1,-2)] and A^(-1) = alpha...

If `A = [(2,3),(1,-2)] and A^(-1) = alpha A , ` then the value of `alpha ` is :

A

7

B

-7

C

`1/7`

D

`-1/7`

Text Solution

Verified by Experts

The correct Answer is:
C
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