>mfw professor is doing partial derivatives on the board >mfw

Well OP when you go to a shitty school you should expect shitty profs.

was this before or after you woke up?

>>8464018
Because he has to solve it in real time in front of an entire class. Doing math in front of a group of people on the spot is choke city.

>>8464018
i don't believe you.
a highschool teacher can do that shit

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9KB, 197x256px

>>8464018

your mastery of basic calculus has us all in awe

>>8464018
>why are brainlets allows to teach?
>probably gonna get a C on the midterm

>>8464018
>why are brainlets allows to teach?
Well, in most fields it's because the non-brainlets are busy doing important work. But in mathematics that's obviously not true so I'm not sure OP.

I remember one of my linear algebra professors back in 1st year undergrad was really shitty at teaching, but goddamn his mental arithmetic was on point. The fucker could multiply 4x4 matrices together in his head as well as mentally calculate their determinants.