Sample question from math.net. [ATTACH=full]3362[/ATTACH] 1. The derivative of x^2 is a term, it is 2x. Can the derivative be a constant? 2. If I wanted to find the derivative at the point (2, 4), I simply let x = 2 for 2x to get 4. Yes? How about for the point (a, b)? I simply let x = a for 2x to get 2a. Yes?