From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 257/CH8/EX8.19/example_8_19.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 257/CH8/EX8.19/example_8_19.sce

(limited to '257/CH8/EX8.19/example_8_19.sce')

diff --git a/257/CH8/EX8.19/example_8_19.sce b/257/CH8/EX8.19/example_8_19.sce
new file mode 100644
index 000000000..f3b367aea
--- /dev/null
+++ b/257/CH8/EX8.19/example_8_19.sce
@@ -0,0 +1,23 @@
+s=%s
+F=s^6+2*s^5+5*s^4+8*s^3+8*s^2+8*s+4
+
+disp(routh_t(F)) 
+r=coeff(F)
+routh=routh_t(F)
+n=length(r)
+c=0;
+for i=1:n
+if (routh(i,1)<0)
+c=c+1;
+ end 
+  end
+  if(c>=1)
+    printf("system is unstable")
+   else
+       disp("s^2 is")
+       k=(roots(routh(3,:)))
+       disp(k)
+end
+
+if(k(2,1)==k(3,1))
+    printf("repeated roots on imaginary axis. hence unstable system")
\ No newline at end of file
-- 
cgit