And for positive values of x, let me write this down. For x is greater than 0, we get the natural log of the absolute value of x is equal to the natural log of x. And we would also know, since these two are equal for x is greater than 0, for x is greater than 0, the derivative of the natural log of the absolute value of x is going to be equal to the derivative of the natural log of x, which is equal to 1 over x for x greater than 0. So let's plot that. I'll do that in green. It's equal to 1 over x. So 1 over x, we've seen it before.