`f(x)={x-1}/{x+1} then f(f(x))=(a)1/x (b)-1/x (c){1}/{x+1}(d){1}/{x-1}`

If f(x) -1/x , then f(a)+ f((1)/(a))=

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 show that f(1/x)=-f(x) (ii) f(-1/x)=1/(f(x))

If f (x) =(x-1)/(x+1), then prove that f{f(x)}=-1/x.

If f(x)=(x-1)/(x+1) , then show that f(1/x)=-f(x) (ii) f(-1/x)=-1/(f(x))

Let f(x) be a polynomial such that f(-1/2)=0, then a factor of f(x) is:? (a) 2x-1 (b) 2x+1 (c) x-1 (d) x+1

Let A={x in R : xlt=1} and f: A->A be defined as f(x)=x(2-x) . Then, f^(-1)(x) is: (a) 1+sqrt(1-x) (b) 1-sqrt(1-x) (c) sqrt(1-x) (d) 1+-sqrt(1-x)

If f(x)={(x^2+1,x>=1),(3x-1,x 1) f(x) is (a) 2 (b) - 2 (c) 1 (d) - 1

If f(x)=(x+1)/(x-1) , x ne 1 , then f^(-1)(x) is

Let f: R-{3/5}->R be defined by f(x)=(3x+2)/(5x-3) . Then (a).f^-1(x)=f(x). (b).f-1(x)= -f(x). (c). (fof)=x (d). f-1(x)=(1/19)f(x)