rtn on Nostr: So I'm currently going through some material for multi variate calculus and now I'm ...

So I'm currently going through some material for multi variate calculus and now I'm at finding maxima and minima for functions of two variables.

There's a test you can make involving the second partial derivatives, where you compute the value D which is a discriminant. I'd like to know where this comes from.

Any pointers?

#math #calculus