Dr. Charles FultonNADIYAH HUSSAIN AYIDH ALHARTHI2022-06-022022-06-0221789https://drepo.sdl.edu.sa/handle/20.500.14154/63319A Piecewise WKB Approximation for One-Turning Point Sturm-Liouville equations and Asymptotics for EigenvaluesThesis