So I'm just gonna call that log base a of x. So how do we figure this out? Well, the key thing is, is what you might be familiar with from your algebra or your pre-calculus classes, which is having a change of base. So if I have some, I'll do it over here, log base a of b, and I want to change it to a different base. Let's say I want to change it to base c. This is the same thing as log base c of b divided by log base, log base c of a. Log base c of b divided by log base c of a. And this is a really useful thing. If you've never seen it before, you now have just seen it, this change of base, and we prove it in other videos on Khan Academy.