First of all, due to my poor performance on math, I couldn't study CS in uni and was dropped to a shitty major. Secondly, I flunked all the math subjects in the uni, can barely get my degree. Worst of all, the graduate school entrance exam I am preparing on, math is still the biggest obstacle. I mean WTF? I don't know why my math ability is so poor. Maybe because of the shitty high school math teacher; maybe there is some errors in my leaning method; maybe I just don't have the talent in math.. Kind of desperate right now.