Question

Find f¹(x) for the function
f(x) = -4.
2
f¹(x) = [?]x + [ ]

Answer 1

`{f}^( - 1)(x) = 2x + 8`

Explanation:

`f(x) = (x)/(2) - 4 \\ \\ y = (x)/(2) - 4 \\ \\ y = (x - 8)/(2) \\ \\ x = 2y + 8 \\ \\ {f}^( - 1) (x) = 2x + 8`