What kind of math for magnetic fields?

Question

to understand and accurately predict electromagnetic fields - what level of math would best suit me?

Answer 1

I agree with Guest1854, but with the following caveat. Learning E-M without a complete understanding of multivariable calculus and differential equations is an absolute nightmare. Its no fun to do both concurrently, best to complete the math courses first, not do what I did all those years ago as an undergrad.