Question

If f(x)=1-x which Valium is equivalent to|ff(x)|?

Answer 1

Answer:

Given f(x) = 1/x , so replace x by f(x) because function can take any defined real values.

It will give f(f(x)) = 1/f(x). Now we know that f(x)=1/x, keep this value in above equation.

We have f(f(x))= 1/(1/x) i.e. f(f(x))= x.