Let `f(x)=(x-1)/(x+1)`,then `f(f(x)`is

Let f(x)=(x-1)/(x+1) then f(1) is equal to

If f(x)=(x-1)/(x+1), then f(f(ax)) in terms of f(x) is equal to (a) (f(x)-1)/(a(f(x)-1)) (b) (f(x)+1)/(a(f(x)-1))(c)(f(x)-1)/(a(f(x)+1))(d)(f(x)+1)/(a(f(x)+1))

Let f(x)=(x)/(x+3) , then f(x+1)=?

Let f(x)=(x)/(x+3) , then (1)/(f(x+1))-f((1)/(x+1))=?

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

Let the function f be defined by f(x)=((2x+1)/(1-3x)) then f^(-1)(x) is

Let f(x)=x+(1)/(x), Then f(x^(3)) equals

Let f(x)=(x)/(1+|x|),x in R, then f is