### Home > CALC > Chapter 7 > Lesson 7.4.4 > Problem 7-209

7-209.

Consider the function .

Algebraically determine where

is increasing.Where is

positive?Algebraically determine whether

is concave up or concave down at.Solve

and.Determine the

-coordinates of all points of inflection.An inflection point occurs where

undergoes a sign change.

Sometimes that happens whereand sometimes whereDNE.