Use a Graphing Utility to Graph the Function Over the Indicated

Essay

Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local
minima. Determine where the function is increasing and where it is decreasing. If necessary, round answers to two
decimal places.
- $$f ( x ) = x ^ { 3 } - 4 x ^ { 2 } + 6 ; ( - 1,4 )$$