If `f(x)=(1-x)/(1+x)`, then find `f[f (sintheta)]`

If f(x)=(x-1)/(x+1), then find f{f(x)}

If f(x)=(a-x^n)^(1/n) then find f(f(x))

If f(x) = 1/(1+x) , then find f[f{f(x)}] .

if f(x)=1/(1-x) then find f((x-1)/x)

f(x)+f(1-x)=2 then find f((1)/(2))=

If f(x)=(x-1)/(x+1), find f(2x) in terms of f(x)

If 2f(x - 1) - f((1-x)/x) = x find f(x).

f(x) = x^(x)+ x^(1/x), find f'(x).

If 2f(x)-3f((1)/(x))=6x+(1)/(x) then find f(x) and f(2)

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