What math have you learned?

[Aielyn]

the-pi-guy said:

Out of curiosity, what math classes have you taken?  

"High School Algebra", "Calculus I", "Calculus II", etc:

 

-What classes have you taken?  

-Which were the most interesting?  The least?

-What were the best books you used?

-What classes are you planning on taking?  

I've gone all the way up to PhD, specifically in calculus and its applications in physics. I can't really comment specifically on things like "the best books", but I'm always hearing great things about a Calculus book by Anton.