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Let f(x)=min{1,cos x,1-sinx}, -pi le x l...

Let `f(x)=min{1,cos x,1-sinx}, -pi le x le pi`, Then, f(x) is

A

f(x) is not differentiable at 0

B

f(x) is differentibale `pi//2`

C

f(x) has local maximum at 0

D

None of these

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The correct Answer is:
A, C
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