If A= |(x,1,1),(1,x,1),(1,1,x)| and B = ...

If `A= |(x,1,1),(1,x,1),(1,1,x)| and B = |(x,1),(1,x)|, " then " (dA)/(dx) =`

A

`3B+1`

B

3B

C

`-3B`

D

`1-3B`

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The correct Answer is:

B

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