Imagine we're asked to approximate the area between the x-axis and the graph of f from x equals one to x equals 10 using a right Riemann sum with three equal subdivisions. To do that, we are given a table of values for f. So I encourage you to pause the video and see if you can come up with an approximation for the area between the x-axis and the graph from x equals one to x equals 10 using a right Riemann sum with three equal subdivisions. So I'm assuming you've had a go at it. So now let's try to do that together. And this is interesting because we don't have a graph of the entire function, but we just have the value of the function at certain points. But as we'll see, this is all we need in order to get an approximation for the area. We don't know how close it is to the actual area with just these points, but it'll give us at least a right Riemann sum for the approximation or an approximation using a right Riemann sum.