CPM Homework Help : PCT Problem 9-142

Use the definition of the derivative to find the value of $f ^\prime\left(3\right)$ when $f\left(x\right) = 2^{x}$ . What does this value tell you about the function at $x = 3$ ?

Step:

$f^\prime(3)=\lim \limits_{h\rightarrow 0}\frac{f(3+h)-f(3)}{h}$

You will need to use a calculator to obtain your approximation.