And this I could rewrite. This is equal to the integral from two to four of six x to the negative three power. That's that first term there. And x squared divided by x to the third, well that is going to be one over x. So plus one over x dx. Now this is going to be equal to, let's take the antiderivative of the different parts, and we're going to evaluate that at four, and we're going to evaluate that at two. And we're going to find the difference between this expression, the antiderivative evaluated at four and at two.