CPM Homework Help : PC Problem 10-60

Use the definition of the derivative to find the slope of $y = x^{3}$ at $x = −2$ .

Hint:

$\lim\limits_{ {h} \to 0 } \frac{\lim\limits{f}({x}+{h})-{f}({x})}{{h}}?\lim\limits_{ {h} \to 0 }\frac{({x}+{h})^3-{x}^3}{{h}}$

Answer:

$12$