=
For the function f, use composition of functions to show that f1 is as given.
1-x
1
x) = 1= x, f¹(x) = x + 1
f(x)=
To show that f '(x)=x+₁ find (f ¹of)(x) and (f of ¹)(x) and check to see that
Beginning with (of)(x).
(f¹of)(x) =
II
11
11
=X
Now start with (f of ¹)(x).
(for ¹)(x) =
...
11