Math 3118, section 4

Spring 2002

Supplementary class exercise for Wednesday, February 27

 

1.   Let  f(x)= x3 + 3x2 - 1, where x is a real variable.

  1. Fill in the following table of values:
    2.

    x

    -3

    -2

    -1

    0

    1
    f(x)

      

      

      

      

      

  2. On which of the following intervals does the Intermediate Value Theorem say that f(x) has a real zero?
  3. (Optional) If you have a graphing calculator, graph the function  f(x)= x3 + 3x2 - 1.

   

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