I studied engineering in university, and as part of that I took enough calculus, numerical methods, statistics, and logic courses to earn a math degree along si

I studied engineering in university, and as part of that I took enough calculus, numerical methods, statistics, and logic courses to earn a math degree along side my engineering one. I spent hundreds of hours poring over 1500 page textbooks and being given the driest lectures imaginable by people who were delivering them on autopilot. I would estimate that one hour of khan academy was roughly equivalent to a weeks coursework, which was 3 lectures and probably an extra 2 hours of self study per lecture. It was undoubtedly the only reason I succeeded in the way I did.