diff --git a/CustomView/Advance/[9]Matrix_Basic.md b/CustomView/Advance/[9]Matrix_Basic.md
index 864f190..9da4627 100644
--- a/CustomView/Advance/[9]Matrix_Basic.md
+++ b/CustomView/Advance/[9]Matrix_Basic.md
@@ -175,6 +175,10 @@ $$
 \\right ]
 $$)
 
+#### b.错切
+
+
+
 
 ### 四大常用操作