Ying has a different method for summing an infinite series. Here are her steps: Homework Help ✎

1. Let S = the sum.

2. Separate the first term from the rest of the series.

3. Factor the rest of the terms so that the remaining factor is S .

4. Substitute S for the other factor.

5. Solve for S.

6. 
   
   
   

Apply Ying's method to find S in the following problem. The first three steps are done for you. Copy them first, then complete the solution.