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Let f(k)(x)=(1)/(k)(sin^(k)x+cos^(k)x) w...

Let `f_(k)(x)=(1)/(k)(sin^(k)x+cos^(k)x)` where `x in R` and `kge1`then `f_(4)(x)-f_(6)(x)` equals

A

`1/3`

B

`1/4`

C

`1/12`

D

`1/16`

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The correct Answer is:
C
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MODERN PUBLICATION-MOCK TEST PAPER -III-SELECT THE CORRECT ANSWER
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