Given function is .
Replace with y.
Next Switch x for y and y for x.
\ \ \
Next solve for y:
\ (Add 2 to each side)
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Divide each side by 4)
(Cancel common terms)
(Simplify)
(
)
The value of .
Write in function notation,using to represent the invrse of the function f.
Substitute in above function,
The inverse of the function is
.