Integration by Parts
Integration by parts is a method of integration that we use to integrate the product (usually!) of two functions. The aim is to change this product into another one that is easier to integrate. Although the formula looks quite odd at first glance, the technique is not too complicated. \displaystyle \int u\cdot\dfrac{\mathrm{d}v}{\mathrm{d}x}\,\mathrm{d}x=uv-\int v\cdot\dfrac{\mathrm{d}u}{\mathrm{d}x}\,\mathrm{d}x The...