don't deny our r-squared pi

I was reading the translation of U-Kiss's 0330, and there's this line where it said: "don't deny our r-squared pi". I still love U-Kiss. Here is where I insert incessant fangirl-ing. Anyway, I'm doing maths homework. Today we started calculus and I think I'm understanding what it is. It's basically finding the gradient of a curve/finding the gradient of a certain point. I think. One or the other. I don't have much homework to do, besides study for maths and tutor homework. I still have five chapters to read, and today we were scolded for 'not' doing our English homework. We did do it, some of us just had extremely sore throats or were insecure about our work. 'Tis all.

I am trying so hard for maths, it's not even funny. LOL.