Step 1:
\The functions are and
.
Find inverse function of .
Change to
.
.Interchange
and
.
.
Solve for .
.
Change to
.
.
Step 2:
\Find inverse function of .
.
Change to
.
.
Interchange and
.
.
Solve for .
Change to
.
.
Step 3:
\Find .
Substitute in
.
Substitute in
.
.
Solution:
\.