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If f'(x)={(1-2sin^2x)/(f(x))}, f(x) ge ...

If ` f'(x)={(1-2sin^2x)/(f(x))}, f(x) ge 0, AA x in R` and f(0)=1, then f (x) is a periodic function with the fundamental period

A

`pi`

B

`2pi`

C

`pi/2`

D

none of these

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The correct Answer is:
A
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PATHFINDER-FUNCTION-QUESTION BANK
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  11. Let f(x)={(-1+sinK1pix, x is rational), (1+cosK2pix, x is irrational...

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