The derivative g'(x) of a function g(x) is given by {eq}g'(x) = \left\{\begin{matrix} 2x &x < 1 \\ 3 - x &1 \leq x \leq 4 \\ -5 + x & x > 4 \end{matrix}\right.
The derivative g'(x) of a function g(x) is given by {eq}g'(x) = \left\{\begin{matrix} 2x &x < 1 \\ 3 - x &1 \leq x \leq 4 \\ -5 + x & x > 4 \end{matrix}\right. The graph of the derivative f '(x) will apear in green, and you can compare it with your sketch. The button Next Example provides a graph of a new function f(x). The examples are chosen to best illuminate the geometric relationship between the graphs of f(x) and its derivative f '(x).