Changes
/* Polynomial and simple rational */ added a link to Riemann Integral
=== Polynomial and simple rational ===
To see the proofs for the first two integrals, see [[Riemann integral]].
:<math>\int xdx = {1 \over 2} x^2 + C</math>
:<math>\int x^2dx = {1 \over 3} x^3 + C</math>
