00:04
All right, so we're going to work backwards and solve for g inverse x.
00:08
So to get rid of the cube root, we cube both sides.
00:12
So we have x cubed equals g inverse x minus 4.
00:18
We're going to add 4 to both sides.
00:21
So we get x cubed plus 4 equals g inverse x.
00:26
And then we're going to compare three points on the original.
00:31
So we have g of 0 equals the cube.
00:35
Root of negative 4, g of, and let's look at 4, so it'll be a nicer number.
00:43
So you get the cube root of 4 minus 4, which is 0, which is 0.
00:50
And again, we'll pick a nice point...