Integration by parts

Integration by parts is a type of math that helps you figure out the area under a graph. To do this you start by dividing the area into different shapes and counting how many of each shape there are. Then, you can use Integration by parts to figure out how much area each shape has and finally add them all up to get the total area. It's like doing a jigsaw puzzle to figure out the total area, but instead of cutting shapes out of paper, you're using math equations.