You can find current versions of the notes through official University of Waterloo sources: Official Course Site AMATH 250 Course Notes 2.1 (Fall 2025 Edition) Older Edition (2.0) : Still available on the Prof. Joe West's personal page Alternative Platforms : Versions are also uploaded on student resource sites like CliffsNotes section or a summary of the Laplace Transform methods used in the course? AMath 250 Course Notes - University of Waterloo