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

If `A=[(1,-2,1),(2,1,3)] and B=[(2,1),(3,2),(1,1)]` then (AB)' is equal to

A

`[(-3,10),(-2,7)]`

B

`[(1,2),(7//2,2)]`

C

`[(2,2),(7//2,1)]`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Now, `AB=[(1,-2,1),(2,1,3)][(2,1),(3,2),(1,1)]`
`=[(-3,-2),(10,7)]`
`therefore(AB)'=[(-3,10),(-2,7)]`
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