⇒
Detailed breakdown:
In math, an inverse function acts as a "reverse" to another function: if f applied to x yields y, then g applied to y gives back x, meaning f(x) = y if and only if g = x.
In this case, we define h(x) as the inverse of f(x). We need to discover the value of h(f(x)). Let's explore this:
Let the inverse of
=
, but as per the question, it corresponds to h(x) or
. Now,

⇒ 
By substituting f(x) into x at h(x), i.e.
⇒ 
The multiplication of
and
equals 1,
⇒ 
Thus,
⇒
.