diff --git "a/_posts/2024-03-01-\346\225\260\345\255\246\345\255\246\344\271\240.md" "b/_posts/2024-03-01-\346\225\260\345\255\246\345\255\246\344\271\240.md"
index b400d45..a96c6f5 100644
--- "a/_posts/2024-03-01-\346\225\260\345\255\246\345\255\246\344\271\240.md"
+++ "b/_posts/2024-03-01-\346\225\260\345\255\246\345\255\246\344\271\240.md"
@@ -110,3 +110,8 @@ $\forall x \exist x$
 
 ![image-20240308165330223](img/2024-03-01-%E6%95%B0%E5%AD%A6%E5%AD%A6%E4%B9%A0/image-20240308165330223.png)
 
+### 无穷小与无穷大
+
+#### 例1：lim x->0 x sin(1/x) = 0
+
+ sin(1/x)有界，有界乘以趋于0的就是0