Question

Let f(x) = x2 - 16. Find f-1(x).

Answer 1

that's like making x the subject :)
(you can let y be f(x) for the moment)

Answer 2

wat

Answer 3

wat

Answer 4

wat is u talking bout

Answer 5

Let \(y\) be \(f(x)\) and you have \(y=x^2-16\).
Solve for \(x\).

Answer 6

f(x) is the same as writing y

Answer 7

i get it

Answer 8

\[y=x^2-16 \rightarrow x=y^2-16 \rightarrow y^2=x+16 \rightarrow y=\pm \sqrt{x+16}\]

Answer 9

once u get y=x^2-16
u switch x and y
and then get x alone by solving for it

Answer 10

or sorry y alone

Answer 11

not x

Answer 12

thank you guy

Answer 13

no problem

Answer 14

no problem :)