Sturm–Liouville theory

Sturm–Liouville theory is a way to solve a type of math problem called differential equations. These equations try to explain how something changes over time. The Sturm–Liouville theory helps you find the answers. In Sturm–Liouville theory, you divide the equation's parts into simpler pieces. Then you solve each piece separately. Next, you put all the pieces back together again. Finally, you have your answer!