diff --git a/README.md b/README.md
index 34f66c1..e3ab761 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
 # linear_algebra
+## 5 ##
+| Natrual Frequency 1 | Natural Frequency 2 | 
+| 2sqrt(5) | --- | 
+
 
 ## 6 ##
 | # of segments | largest | smallest | # of eigenvalues |