vault backup: 2025-10-01 12:29:00

2025-10-01 12:29:00 -06:00
parent 79648dfdb2
commit 59e96d8fa2
1 changed files with 2 additions and 1 deletions
--- a/education/math/MATH1220
+++ b/education/math/MATH1220
@@ -77,5 +77,6 @@ Converges to $\dfrac{a}{1-r}$  if $|r| < 1$ or diverges if $|r| >= 1$.
 # Examples:

 > Determine if the series $\sum_{n=1}^{\infty}35(7^{-n} * 2^{n-1})$ diverges or converges. If it converges, state where.
-1. Rewrite $7^{-n}$ to move it out of the exponent
+1. Rewrite $7^{-n}$ as $(\frac{1}{7})^n$ to be closer to the form $ar^n$
+$$ = \sum_{n=1}^\infty 35*($$
 2.