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


Consider the function .

  1. Algebraically determine where is increasing.

    Where is positive?

  2. Algebraically determine whether is concave up or concave down at .

    Solve and .

  3. Determine the -coordinates of all points of inflection.

    An inflection point occurs where undergoes a sign change.
    Sometimes that happens where and sometimes where DNE.