Given function is .

Replace with y.

Next Switch x for y and y  for x.

Next solve for y:

      (Multiply each side by negative one)

(Apply distributive property: )

                (Product of two same signs is positive)

                         (Product of two different signs is negative)

        (Subtract 1 from each side)

        (Apply commutative property: )

              (Apply additive inverse property: )

                   (Apply additive identity property: )

               (Divide each side by 2)

                   (Cancel common terms)

                 (Simplify)

 The value of .

Write in function notation,using to represent the invrse of the function f.

"Y " value substitute in above function,

.

The invrse of the function is .