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If f(x)=(e^(x))/(1+e^(x)),I(1)=int(f(-a)...

If `f(x)=(e^(x))/(1+e^(x)),I_(1)=int_(f(-a))^(f(a))xg{x(1-x)}dxandI_(2)=int_(f(-a))^(f(a))g{x(1-x)}dx,` then the value of `(I_(2))/(I_(1))` is

A

2

B

1

C

`-1`

D

`-3`

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