So we've got a Riemann sum. We're gonna take the limit as n approaches infinity. And the goal of this video is to see if we can rewrite this as a definite integral. I encourage you to pause the video and see if you can work through it on your own. So let's remind ourselves how a definite integral can relate to a Riemann sum. So if I have the definite integral from a to b of f of x, f of x dx, we have seen in other videos, this is going to be the limit as n approaches infinity of the sum, capital sigma, going from i equals one to n. And so we're essentially going to sum the areas of a bunch of rectangles, where the width of each of those rectangles, we can write as a delta x. So your width is going to be delta x of each of those rectangles.