ELI5: Explain Like I'm 5

Series expansion

Series expansion is a way to describe a complicated equation using simpler terms. For example, if you had an equation that involved a lot of numbers, you could use series expansion to break down the equation into simpler parts. Series expansion can also be used to figure out things like how a graph or equation will look or act over time. Instead of trying to figure out the entire equation at once, series expansion helps to break it down into simpler parts that make it easier to understand.