Let (x) is a real function, defines as `f(x) =(x-1)/(x+1),` then prove that `f(2x)=(3f(x)+1)/
Channel: Doubtnut
Date: 2019-12-27

Let (x) is a real function, defines as `f(x) =(x-1)/(x+1),` then prove that `f(2x)=(3f(x)+1)/(f(x)+3).`

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