If `f (x) =log ""(1+x)/(1-x)` then-

If f(x) = log [(1+x)/(1-x)] , the prove that f[(2x)/(1+x^2)] =2f(x)

If f(x) = log_e ((1-x)/(1+x)) , then f' (0) is

If f(x) = log ((1+x)/(1-x)) , where -1 lt x lt 1 then f((3x+x^(3))/(1+3x^(2))) - f((2x)/(1+x^(2))) is equal to

If f(x) = log ((1+x)/(1-x)) , where -1 lt x lt 1 then f((3x+x^(2))/(1+3x^(2))) - f((2x)/(1+x^(2))) is equal to

If f(x)=log((1+x)/(1-x)) and then f((2x)/(1+x^(2))) is equal to {f(x)}^(2) (b) {f(x)}^(3)(c)2f(x)(d)3f(x)

If f(x)=log((1+x)/(1-x))a n dt h e nf((2x)/(1+x^2)) is equal to {f(x)}^2 (b) {f(x)}^3 (c) 2 f(x) (d) 3f(x)

If f (x) = log_e ((1+x)/(1-x)) , prove that: f (x) +f (y)= f ((x+y)/(1+xy)) .