diff --git a/CustomView/Advance/[9]Matrix_Basic.md b/CustomView/Advance/[9]Matrix_Basic.md
index 61bbf1d..37fc856 100644
--- a/CustomView/Advance/[9]Matrix_Basic.md
+++ b/CustomView/Advance/[9]Matrix_Basic.md
@@ -122,9 +122,9 @@ y\\\\
  = 
 \\left [ 
 \\begin{matrix}  
-    1     & MSKEW\\_X & 0 \\\\
-MSKEW\\_Y &     1     & 0 \\\\
-    0     &     0     & 1
+ 1   & k_1  &  0 \\\\
+k_2  &  1   &  0 \\\\
+ 0   &  0   &  1
 \\end{1} 
 \\right ] 
 \\left [