Just started a Linear Algebra type math class this semester, and for some reason it has a 2 hour discussion class once a week. So far we have only meet 4 times so far, and i hated going to them since the 2nd meeting The TA goes over the same examples that the professor gives during lecture, and we wont get into the constant mistakes. But not only that I think the guy from the red-eye tv commercials has more personality then this guy. His voice stays at one level for 2 hours. Anyways, today i got so mad that I got up and walked out of the discussion. We had a quiz last week, which i swear i nailed. When i got it back I got points taken off because "i didn't use cofactors" to find the determinant of a matrix. The catch, is I DID! He went over the problem in class, and guess what, It was the same that I did. The only thing I didn't do was show that (-1)^j+k = (+/-)1. I just went a head and put down if they were + or - . When I talked to him, he said it was because of that reason. I am going to go see the professor about this tomorrow. Whats next, he will take points off for not showing A * 0 = 0? or 0.0 != 0? What is the limit of common sense math that you do and do not have to write down?? Sorry for the rant, I just needed to get off my chest before I start flipping out on the TA/Professor.