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On which of the following intervals is t...

On which of the following intervals is the function `f(x)=x^(100)+sinx-1` increasing? (i) `(0,\ pi//2)` (ii) `(pi//2,\ pi)` (iii) `(0,\ 1)` (iv) `(-1,\ 1)` .

A

`(0,(pi)/2)`

B

`(0,1)`

C

`(pi//2,pi)`

D

none of these

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The correct Answer is:
D
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