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Let f:(-1,1)toR be a differentiable func...

Let `f:(-1,1)toR` be a differentiable function with `f(0)=-1` and `f'(0)=1`. Let `g(x)=[f(2f(x)+2)]^(2)`. Then `g'(0)=`

A

4

B

`-4`

C

0

D

`-2`

Text Solution

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The correct Answer is:
B
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