![Hello!! I have a question whether this telescoping series converges or diverges? My attempt to the solution is attached. I found that it converges but I am not sure it's correct because Hello!! I have a question whether this telescoping series converges or diverges? My attempt to the solution is attached. I found that it converges but I am not sure it's correct because](https://i.redd.it/odxxrhzix7881.jpg)
Hello!! I have a question whether this telescoping series converges or diverges? My attempt to the solution is attached. I found that it converges but I am not sure it's correct because
![Ratio Test & Convergent Series | Overview, Formula & Examples - Video & Lesson Transcript | Study.com Ratio Test & Convergent Series | Overview, Formula & Examples - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/hghdxg5g7u.jpg)
Ratio Test & Convergent Series | Overview, Formula & Examples - Video & Lesson Transcript | Study.com
![SOLVED: Consider the series âˆ'(n=1 to ∞) (-1)^(n+1) * cos(n) Determine the first four partial sums, s1 through s4, of this series. Do not give decimal answers with a calculator. NOTE: This SOLVED: Consider the series âˆ'(n=1 to ∞) (-1)^(n+1) * cos(n) Determine the first four partial sums, s1 through s4, of this series. Do not give decimal answers with a calculator. NOTE: This](https://cdn.numerade.com/ask_images/2dcacfbe72294433b92938fc2566bcfb.jpg)