re: What was your hardest undergrad course?

Not as hard as calc 2. To me that bitch was the worst. I did well at strange classes tho. For example, electronics 1 & 2 came easy to me, but I struggled at circuits 2 and digital logic. Personally I think I lucked out on my professors for controls and fields because I hardly remember those classes at all except that they weren't all that challenging. But controls I specifically remember the prof being suuuper easy.