CPM Homework Banner

Expand and evaluate each of the following sums.

  1. or, because of the symmetry of , this problem can be simplified as:


  2. Think about the symmetry of odd functions such as .
    Justify why the sum from to will be .

  3. Unfortunately, does not have symmetry across the -axis. We have to expand and evaluate all terms.

  4. is an odd function. Consider symmetry before evaluating.