Is It Invertible?

Every letter is a different function, right? So but also is a thing. You try to think of it like when you take the real numbers except for zero and you multiply by two. If somebody didn't tell you that they multiply by twoYou go well, there's no way I can undo. But if they tell you what they multiplied by you can undo it. For the listeners we are just staring at this We're just staring at the paper right now At the times you recognize the guy in the bottom right We know who the big one is that c4.