If `f(x)=x^3-frac{1}{x^(3)}` find the value of `f(x)+f(frac{1}{x})`

If f(x)=x^(3)-(1)/(x^(3)) , then find the value of f(x)+f(-x) .

If f'(x) = 1/x + x^2 and f(1)=4/3 then find the value of f(x)

If (x^2+x−2)/(x+3) -1) f(x) then find the value of lim_(x->-1) f(x)

If f(x)=x^2+x+1 , then find the value of 'x' for which f(x-1) =f(x)

If f(x)=|x-1|+|x-3| ,then value of f'(2) is equal to

If f(x)=3x+|x| , then the value of f(3x)+f(-x)-f(x) is:

If f(x)=3x^(2)+24x-53 , find the negative value of f^(-1)(0) .

If f(x) = x^3 - frac{1}{x^3} then f(x)+f(1/x)= (A)2 x^3 (B) 2/x^3 (C) 0 (D) 1

If f(x) = (x + 1)/(x-1) , then the value of f{f(3)} is :

Ilf f(x)={x^3, x 2 , then find the value of f(-1)+f(1)+f(3) . Also find the value (s) of x for which f(x)=2.