| Inverse functions undo each other! |
That's it. Go home.
OK. I'll elaborate.
Think of a number... I'll wait.
OK, now add 3 to it... Now, subtract 3 from that. What do you get?
The number you started with!
Check it out:
So, these guys are inverse functions:
add the 3 on... |
takes the 3 off |
