Detailed work on Variational principles and WKB approximation.
Check if your library has the "Instructor's Edition" on reserve. Some institutions allow students to consult these within the library walls. A Word on Academic Integrity
Simply downloading a PDF to copy the answers defeats the purpose of the text. The "work" in Quantum Mechanics isn't just about the final eigenvalue; it’s about the —understanding how to transition from a physical observable to a linear operator. How to Effectively Study Bransden & Joachain