Calculus Examples

$f (x) = \frac{x^{3}}{3} - 5 x^{2} + 21 x + 1$

Step 1

Graph the polynomial in order to determine the intervals over which it is increasing or decreasing.

Increasing on: $(- \infty, 3), (7, \infty)$

Decreasing on: $(3, 7)$

Step 2