Question

If f(x) = x2 -1, what is the equation for f^–1(x)?

Answer 1

@dude

Answer 2

To solve for its inverse, you have to flip the x and y and then solve for y
\(f(x) = x^2 -1\)
f(x) is the same as y

\(y = x^2 -1\)

Now flip
\(x=y^2-1\)

Answer 3

And then solve for y

Answer 4

@dude how do I solve for y?

Answer 5

Add 1 to both sides

Answer 6

x+1=y^2?

Answer 7

Yes


Now do the square root on both sides

Answer 8

x=-1+y^4?

Answer 9

wut

Answer 10

No

\(\sqrt{x+1}=\sqrt{y^2}\)

Answer 11

x=-1+y^2

Answer 12

I am not sure what you did

It is just
\(\sqrt{x+1}=y\) or \(y=\sqrt{x+1}\)

The inverse is a square root function