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If fk(x)=1/k(sinx+cos^kx) then f4(x)-f6 ...

If `f_k(x)=1/k(sinx+cos^kx)` then `f_4(x)-f_6 (x)=` (A) `1/12` (B) `5/12` (C) `(-1)/12` (D) `-5/12`

A

`1/(6)`

B

`1/(3)`

C

`1/(4)`

D

`1/(12)`

Text Solution

Verified by Experts

The correct Answer is:
D
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