It looks like you're referring to a previous question about finding the interval of convergence of a series. However, I don't have access to that question yet. Could you please provide the series or the specific details of the problem? Then, I can apply a different convergence test to determine the interval.

Alternatively, you can upload an image of the question, and I'll analyze it for you! 😊

In the meantime, here are some common tests for determining the interval of convergence:

1. Ratio Test – Used when factorials or exponentials are involved.
2. Root Test – Useful when terms have nth powers.
3. Alternating Series Test – Checks convergence of alternating series.
4. p-Series Test – Applies to series of the form $\sum \frac{1}{n^p}$.
5. Direct Comparison Test – Compares a given series to a known convergent/divergent series.

🔹 Tip: Always check for absolute convergence and test the endpoints separately!

Let me know the series, and I'll solve it with a different test. 😊