First term of a proof based course. A single exercise ate 40 minutes last night and I still did not finish it, and there are six on the sheet. My classmates all say it took them twenty minutes so I cannot tell if I am…
Three equations, three unknowns, and the determinant of the coefficient matrix comes out 0. My notes say that means no unique solution, but when I row reduce by hand I find solutions that check out when I plug them back…
Working through for a homework set. The first round of parts leaves me with , and the second round hands me back the exact integral I started with. I have done it four times and I keep going in a circle. Is my choice of…
I placed into Calc 1 for the autumn but I last did algebra properly about seven years ago. I have roughly six weeks and can give it 45 minutes a day, not more, because I am working full time. Do I spend that on a…
I can follow epsilon delta proofs when I read them but I cannot produce one. The step where the proof says let delta equal epsilon over five feels like it came from nowhere. How do people actually find that number, and…