ELI5: Explain Like I'm 5

Mathematical finance

Mathematical finance is a type of math that can help people decide whether or not something, like an investment, is a good idea. It uses certain formulas and equations to figure out if an investment is likely to make money or not. It can also be used to help people decide how much money they should put in the investment, when they should put it in, and when they should take it out. By using mathematical finance, people can make better decisions with their money.