1 files changed, 24 insertions, 0 deletions
diff --git a/257/CH8/EX8.8/example_8_8.sce b/257/CH8/EX8.8/example_8_8.sce
new file mode 100644
index 000000000..dccb26a9b
--- /dev/null
+++ b/257/CH8/EX8.8/example_8_8.sce
@@ -0,0 +1,24 @@
+s=%s
+F=s^6+3*s^5+4*s^4+6*s^3+5*s^2+3*s+2
+
+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 printf("there are no roots on RHS")
+  end
+
+disp("s^2 is")
+R=roots(routh(3,:))
+disp(R)
+
+disp("as there are 2 pairs of repeated roots on the imaginary axis, the system is unstable")
+