Question

Let f(x) = 2x + 2. Solve f-1(x) when x = 4.

Answer 1

http://www.algebrahelp.com/calculators/equation/

Answer 2

First you need to find f inverse, since they want you to find \[f^-1(x)\] when x = 4.

If f(x) = 2x + 2, do you know how to find the inverse of that function?

Answer 3

nah not really iv always had difficulty @anteater

Answer 4

If you don't mind, I will show you a process you can use to find the inverse of a function.

Answer 5

Basically, when you have a function of x, that function takes x and does something to it. In the case of your function f(x) = 2x + 2, the function multiplies x by 2, then adds 2 to the result.

The inverse function "undoes" what the function did to x, so you get x back.

Answer 6

honestly im very lost m kinda slow when it comes to math