# Math Help - [SOLVED] Radius and interval of convergence 3

1. ## [SOLVED] Radius and interval of convergence 3

Please check my work

2. I think I got the same interval as you did when I was doing this. But I used root test.

3. Originally Posted by ThePerfectHacker
I think I got the same interval as you did when I was doing this. But I used root test.
yeah, i think both the root test and ration test works for all of them, but i decided to shake things up a bit