Formula for Celsius temperature
as a function of Fahrenheit temperature
is
, where
.
Consider
.
Inverse of the function
is given by
.
Solve equation
for
.

The inverse function is a Fahrenheit temperature in terms of Celsius temperature
\
.
\
Domain of
is the range of
.
To find the range of
,
Evaluate
and
as the domain of the function is 
\
.
\
.
Range of the function
is
.
Therefore, domain of the inverse function
is
.
Inverse of the function is
.
Domain of the inverse function
is
.