### Home > APCALC > Chapter 9 > Lesson 9.1.1 > Problem 9-15

9-15.

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.*

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

Problem: Start of Solution: |