![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Observe the graphs:
\The partial sum of the graph ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=079bcea0df9b01e3afc5cde6558deaf4.png\")
alternate above and below the horizontal; line representing the sum.
Therefore, graph ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=079bcea0df9b01e3afc5cde6558deaf4.png\")
represents the partial sums of an alternating series.
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The partial sum of the graph alternate above and below the horizontal; line representing the sum.
Therefore, graph represents the partial sums of an alternating series.