1 files changed, 2 insertions, 2 deletions
diff --git a/60/CH4/EX4.21/ex_21.sce b/60/CH4/EX4.21/ex_21.sce
index aee0e9737..a1542a30f 100755
--- a/60/CH4/EX4.21/ex_21.sce
+++ b/60/CH4/EX4.21/ex_21.sce
@@ -4,5 +4,5 @@ B=[1 2 0;2 1 0;0 0 -1]
 I=[1 0 0;0 1 0;0 0 1]
          //here we are taking lamda=a
          //det(B-a)*I=0 is characteristic equation to get lamda
-deff('[y]=p(a)','p(a)=det(B-a)*I')
-p(a)=0
-\ No newline at end of file
+deff('[y]=pa','pa=det(B-a)*I')
+pa=0
+\ No newline at end of file