Riemann+Sums

Using a Riemann Sum is a means of estimating the area under a curve by using rectangles whose heights correspond to the height of the function in question at certain points, then summing up to get an estimation of the area. .....


 * f(xi) being the height of the function at the point xi.
 * xi = to a + iΔx
 * a = the bottom bound
 * i = the step to each new rectangle
 * n = the number of rectangle approximations

Example of a Riemann sum by the right hand endpoint.