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In a function 2f(x)+ xf(1/x)-2f(|sqrt2si...

In a function `2f(x)+ xf(1/x)-2f(|sqrt2sin(pi(x+1/4))|)=4cos^2[(pix)/2]+xcos(pi/x)`. Prove that: 1. f(2)+f(1/2)=1 2. f(2)+f(1)=0

A

`f(2)+f(1/2)=1`

B

f(2)+f(1)=0

C

`f(2)+f(1)=f(1/2)`

D

`f(1)*f(1/2)*f(2)=1`

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