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Home > PC3 > Chapter 4 > Lesson 4.2.2 > Problem 4-78

4-78.

Complete the following problems about sigma notation.   

  1. Expand the summation:

  2. Write the following using sigma notation:

    The argument (expression) is .

    Write an expression for the ''s.
     

  3. The sum in part (b) could be a left endpoint approximation of an area under a curve. Which curve? What is the interval?