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If f(x)= |cosxl, then f'((3pi)/4) equal ...

If f(x)= |cosxl, then `f'((3pi)/4)` equal to -

A

`-(1)/(sqrt(2))`

B

`(1)/(sqrt(2))`

C

1

D

None of these

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The correct Answer is:
B
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 22 -Mathematics
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