00:01
The first thing to know is that if you are one to one, that's why the directions say that, that will imply that an inverse exists.
00:09
So you need that statement first.
00:12
And why do we need to be one to one? that means that there's exactly one x value and one y value.
00:23
So the x and y values for the inverse switch.
00:28
Switch.
00:29
So that would be too confusing if you had more than one x value for each one y value.
00:34
So as i'm looking at this first problem where it says f of six is equal to seven, and if i'm telling you to do the inverse is to switch them, you just have that notation that f inverse of seven is equal to switch it six.
00:52
So that's it.
00:53
Looking at the next one, if f inverse of negative four, is equal to negative 8.
01:00
Again, we're going to switch them if i'm going to write f of negative 8.
01:05
See how we'll get that gap put into the parentheses? so that answer would be negative 4.
01:11
Now, let's slowly do the last one...