Use a Graphing Utility to Graph the Function Over the Indicated

question 151

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.
- $f ( x ) = 0.15 x ^ { 4 } + 0.3 x ^ { 3 } - 0.8 x ^ { 2 } + 5 ; ( - 4,2 )$

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Definitions:

Tracheotomy

A surgically made opening in the trachea through which a person will breathe.

Intubation

The insertion of a tube into a patient's airway to maintain an open airway or administer certain drugs.

Conchae

Curved shelves of bone located inside the nasal cavity that increase its surface area for the purpose of warming, moisturizing, and filtering the air breathed in through the nose.

Yawning

An involuntary action involving a deep inhalation followed by a wider opening of the mouth, often due to tiredness or boredom.