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/EX8.26/example_8_26.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 257/CH8/EX8.26/example_8_26.sce

(limited to '257/CH8/EX8.26')

diff --git a/257/CH8/EX8.26/example_8_26.sce b/257/CH8/EX8.26/example_8_26.sce
new file mode 100644
index 000000000..54d87cc0c
--- /dev/null
+++ b/257/CH8/EX8.26/example_8_26.sce
@@ -0,0 +1,21 @@
+//determining critical value of K
+s=%s
+syms K
+m=0*s^3+s^2+(K+1)*s+2*K
+cof_a_0 = coeffs(m,'s',0);
+cof_a_1 = coeffs(m,'s',1);
+cof_a_2 = coeffs(m,'s',2);
+cof_a_3 = coeffs(m,'s',3);
+    
+r=[cof_a_0 cof_a_1 cof_a_2 cof_a_3] 
+
+n=length(r);
+routh=[r([4,2]);r([3,1])];
+routh=[routh;-det(routh)/routh(2,1),0];
+t=routh(2:3,1:2); //extracting the square sub block of routh matrix
+routh=[routh;-det(t)/t(2,1),0]
+disp(routh,"rouths tabulation=")
+routh(3,1)=0  //For marginaly stable system
+sys=syslin('c',s*(3*s+1)/(s^3+2*s+4))
+k=kpure(sys)
+disp(k,"K(marginal)=")
\ No newline at end of file
-- 
cgit