" (iii) "f(f(y)=log y" then "f(y)+f((1)/(y))" is equal to: "

If f(y)=log y, then f(y)+f((1)/(y)) is equal to

If f(x)+f(y)=f((x+y)/(1-xy)) and f'(0)=3, then f(tan((1)/(3))) must be equals to

For all rest numbers x and y, it is known as the real valued function f satisfies f (x) + f (y) = f (x + y). If f(1) = 7, then Sigma_(r=1 )^(100) f(r ) is equal to

If f(x)=cos((log)_e x),\ t h e n\ f(1/x)f(1/y)-1/2{f(x y)+f(x/y)} is equal to a. "cos"(x-y) b. log(cos(x-y)) c. 0 d. "cos"(x+y)

Let f(x)=1/2[f(xy)+f(x/y)] " for " x,y in R^(+) such that f(1)=0,f'(1)=2. f(x)-f(y) is equal to

Let f(x)=1/2[f(xy)+f(x/y)] " for " x,y in R^(+) such that f(1)=0,f'(1)=2. f(x)-f(y) is equal to

Let f(x)=1/2[f(xy)+f(x/y)] " for " x,y in R^(+) such that f(1)=0,f'(1)=2. f(x)-f(y) is equal to