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f(x)=|(2 cosx, 1, 0),(x-(pi)/2, 2 cos x,...

`f(x)=|(2 cosx, 1, 0),(x-(pi)/2, 2 cos x, 1),(0, 1, 2cosx)|impliesf'(pi)=`

A

0

B

2

C

`pi/2`

D

`pi-6`

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The correct Answer is:
B
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