Mathematics III is advanced engineering mathematics. It asks you to hold differential equations, transforms, and special functions in your head at the same time, and then use them together. These are my handwritten notes for that course, from BITS Pilani, Dubai Campus, put together for electronics and electrical students.
I started sharing notes online in 2013, in an undergrad hostel room, so that anyone who needed them could use them. That habit has held. At least one person in the world has studied from my notes every single day since 2013.
The notes cover differential equations, Fourier and Laplace transforms, Bessel functions, Legendre polynomials, and eigenvalue problems. The topics build on each other, and the notes follow that structure. There is no shortcut through the mathematics, but a clear set of notes helps you spend time understanding rather than searching.
The PDF is embedded on this page. Read it here, or open and download it to keep for offline use.
Learn. Share. Repeat.