I'm asked all of these questions, I'm asked "If f(x,y) := x2y, then what does ∂f/∂x equal?" and I know it, I do, but I'm so tired and I don't care. I want to know why I feel this way, I want to know why I want to die and why I hurt myself even on good days. I want to know why math is more important than my life and why a grade is greater than my health. The only answer I have so far is 2xy.