The Probability Density Problem

The particle in a box is a great problem to like start off. Do you represent what energy levels? No, or does it represent like the, like the,. like the, what we're solving for in particle in abox. Probability density. Right. I mean, I guess we were understanding it more actually over there, but we don't, didn’t really. But that was a, the decays was finite potential. Right, right, right. And then if you, for example, have a finite potential well where you don't have a zero boundary condition, then for example, you would have a cosine wave at the boundary where then exponentially decays outside