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The period of the function f(x) = sin^4 x + cos^4 x is

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The period of the function f(x) = sin4 x + cos4 x is 

(a) pi

(b) pi/2

(c) 2pi

(d) None of these

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1 Answer

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Best answer

Correct option (b) pi/2

Explanation:

Given that,  f(x) = sin4 x + cos4 x

['.' cos x is periodic with period 2pi ]

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