Chapter 2: Differentiation

The derivative measures how quickly a function is changing at any point. Think of it as: $f'(x) = \lim\_{h \to 0} \frac{f(x+h) - f(x)}{h}$ Find f'(x) for f(x) = x² $f'(a) = \lim\_{x \to a} \frac{f(...