Well, that's going to be your change in position. So this will tell you this is an approximation of your change in position over this time. Then this rectangle, the area of this rectangle, is another approximation for your change in position over the next delta t. And then you can imagine this right over here is an approximation for your change in position for the next delta t. So if you really wanted to figure out your change in position between a and b, you might want to just do a Riemann sum if you wanted to approximate it. You would want to take the sum from i equals 1 to i equals n of v of, and I'll do a left Riemann sum. But once again, we could use a midpoint. We could do trapezoids. We could do the right Riemann sum.