Replace with .
Interchange the variables.
Solve for .
Rewrite the equation as .
To remove the radical on the left side of the equation, square both sides of the equation.
Simplify the left side of the equation.
Solve for and replace with .
Replace the with to show the final answer.
Set up the composite result function.
Evaluate by substituting in the value of into .
Rewrite as .
Since , is the inverse of .