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7-217.

Consider the function . Homework Help ✎

  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 x-coordinates of all points of inflection.

    An inflection point occurs where changes sign.
    Sometimes that happens where and sometimes where DNE.