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Let A =[(2,-1,1),(-1,2,-1),(1,-1,2)] "an...

Let A `=[(2,-1,1),(-1,2,-1),(1,-1,2)] "and" 4B=[(3,1,-1),(1,3,x),(-1,1,3)]`.
If B is the inverse of A, then the value of x is

A

2

B

4

C

3

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
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