Question

Help out with two questions?

Medal + Fan !

Answer 1

@Gabi_M help out?

Answer 2

I dont know if I can. Sorry.

Answer 3

this is a website for help @Gabi_M i don't know what you mean by that but ok.

Answer 4

@robtobey ?

Answer 5

Generally you get the inverse of a function by switching x and y then solving for y.

Answer 6

So do you know what to do for the first equation to get the inverse?

Answer 7

Yes but If you take me through the steps it'd help me get a better understanding.

Answer 8

Ok so what's your first step? What do you get when you switch x and y?

Answer 9

\[y = x^{2}+4\]

to find the inverse, you switch x and y and solve for y do you know how to do this?

Answer 10

Yes @photon336

Answer 11

so now it becomes

Answer 12

f(x) = \[x = y^{2}+4\]


f^{-1}x = \[\sqrt{x-4} = y \]

can you tell whether this is a function or not?