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Hi guys, Im Nancy, and Im going to show you logarithms. Logarithms sounds a little pretentious so Im just gonna call them logs and here are the kinds Im gonna show you. So if you see something up here that looks like the kind youre trying to figure out you can use the links in the video or the description to skip ahead. So Im gonna show you first the basic kind of logs then Ill show you some weirder kinds if you have a log of a negative number, 0, 1, or a fraction. I remember hating the fraction kind. And then Ill show you natural logs which are a special kind of log. And finally, some even weirder logs and by that I mean if you have an x in the log part of your expression or if you have to use the change-of-base formula. So let me show you the basic ones. OK, what if you have a basic log expression like this? What is that? How do you even read that expression? The way you read it is log, base 3, of 9. But how do you evaluate it? Or what if you have to simplify that? How