vault backup: 2025-10-13 16:05:57

2025-10-13 16:05:57 -06:00
parent f2621f8f1c
commit 21af85f721
1 changed files with 3 additions and 1 deletions
--- a/education/math/MATH1220
+++ b/education/math/MATH1220
@@ -140,4 +140,6 @@ The behavior a given power series falls into one of three cases:

 # Examples
 > When does the series $\sum_{n=0}^\infty \frac{x^n}{3^n}$ converge?
-1.  Solving for power series will pretty much start with the ratio test.
+1.  Solving for any power series usually starts with the ratio test.
+		1. Create a ratio with $n + 1$ and $n$. 
+		$$ \frac{x^{n+1}}{3^{n+1}} \cdot \frac{3^n}{x^n} $$