The minimum value of f(x)=sin^4x+cos^4x,...

The minimum value of `f(x)=sin^4x+cos^4x`,`0lexlepi/2` is

A

(a) `1/(2sqrt2)`

B

(b) `1/4`

C

(c) `-1/2`

D

(d) `1/2`

Verified by Experts

The correct Answer is:

D

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