This project is a visual demonstration of two types of Riemann sums (a left-point Riemann sum and a trapezoidal sum; the area that is output is calculated using trapezoidal sums since they converge much faster than rectangular sums and are easy to program). The function graphed is 1/(1 + x^2), which can give the arctangent of any number x when integrated from 0 to x; it can be changed to any function you want in the code. For more information on Riemann sums, go here: https://en.wikipedia.org/wiki/Riemann_sum
