On the spectrum of an irregular Sturm-Liouville problem.

The article provides information on how to determine the eigenvalue problem and solution for Sturm-Liouville mathematical equation. It discusses the procedures in determining the equation's boundary conditions by using the arbitrary complex number and complex-valued function. It presents the equation's fundamental system of solutions, along with initial conditions. It highlights the tips in calculating the equation, where a certain given problem can be reduced into simple mathematical form. Furthermore, the theorems as well as the functions of the equation are also highlighted.