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If the function f: R to R defined by f(x...

If the function `f: R to R` defined by `f(x)=(4^(x))/(4^(x)+2),` then show that `f(1-x)=1-f(x),` and hence deduce the value of `f((1)/(4))+2f((1)/(2))+f((3)/(4))`.

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