@Austin_Dern Mostly just being annoyed at math for being confusing and nonintuitive to me, an engineer

@Austin_Dern It wasn't an actual question, is what I'm saying.

It's not even what I'm working on, I'm trying to get through this complex analysis homework that I don't understand and how do you pick a contour to integrate a thing along the positive real axis and what complex function do you integrate to get the right answer and @.@

@Austin_Dern Really, the thing that I have the most trouble with is figuring out what /function/ to integrate. because the f(x) that you want to integrate isn't always the same as the g(z) that you integrate to find it

@Austin_Dern like, one of the problems on this homework assignment (that led to the professor extending its deadline indefinitely and eventually saying "you can skip that one, here's how you do it") was to integrate from zero to infinity ln(x)/((x+1)(x-2)) and to do that you used a keyhole contour but the function you integrated over the contour was ln²(z)/((z+1)(z-2)) and that made things cancel out properly. But how would one know to use that function?