there are no differential, liner algebra, multivariable calculus

An overhaul of this area of math in Khan should be next on their immediate agenda. Several college degrees will require a command of linear algebra, and some areas of programming (including game development) make use of it. freeCodeCamp has just featured a 20-hour course on this subject!

Hello to all!

Thank you for sharing your thoughts and requests. It is true that Khan Academy has been attempting to improve each one of these areas. I am glad to say that Multivariable Calculus already has practices available in it. As we grow and expand, we’re continuing to add new content to offer a better education at Khan Academy. Investing more heavily in the content team is actually one of our major initiatives.

Thank you for being part of our community!

All the best,

Alex