And saying on which intervals is g increasing, that's equivalent to saying on which intervals is the first derivative with respect to x, on which intervals is that going to be greater than zero? If your rate of change with respect to x is greater than zero, if it's positive, then your function itself is going to be increasing. And so there's a couple of ways that we could approach this. You might just want to inspect kind of the structure of this expression and think about, well when is that going to be greater than zero? Or we could do it a little bit more methodically. We could say, well let's look at the critical points or the critical values for g. So critical, critical points for g. And just to remind ourselves what critical points are, that is when g prime of x is equal to zero or g prime of x is undefined, is undefined. And we have videos on critical points or critical values.