From 74d91ad87ecde8406aa36db477b9734203698d3b Mon Sep 17 00:00:00 2001
From: unknown <2974730459@qq.com>
Date: Fri, 26 Dec 2025 06:50:23 +0800
Subject: [PATCH] vault backup: 2025-12-26 06:50:23

---
 编写小组/课后测/课后测解析版4.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/编写小组/课后测/课后测解析版4.md b/编写小组/课后测/课后测解析版4.md
index 663b3d4..41ca61b 100644
--- a/编写小组/课后测/课后测解析版4.md
+++ b/编写小组/课后测/课后测解析版4.md
@@ -3,6 +3,7 @@ tags:
   - 编写小组
 ---
 1.判断数列 $a_n = \frac{(-1)^n n}{n+1}$ 的收敛性。
+ 
  **解析**  
 - 偶数项子列：$a_{2k} = \frac{2k}{2k+1} \to 1$
 - 奇数项子列：$a_{2k-1} = -\frac{2k-1}{2k} \to -1$