Comments by "Lee Darkguardian" (@darkguardian1314) on "Learn Mathematics for Engineering and Physics" video.

  1. 7:18 The purple ink stencil type is unmistakable. Mimeograph typeset... I can still smell it when I was in school in the 1970s. All the kids smelled it and it had to be bad for us. This was how we got test copies back then without an expensive copier machine. Someone typed it up on carbon paper. Some of the symbols and mistakes had to be marked out or hand-drawn. 😆 Prince died in 2018. My guess is his collection was sold off as whole. He has a research grant in his honor.
    4