1 files changed, 20 insertions, 0 deletions
diff --git a/257/CH8/EX8.22/ex_8_22.sce b/257/CH8/EX8.22/ex_8_22.sce
new file mode 100644
index 000000000..36729e0ff
--- /dev/null
+++ b/257/CH8/EX8.22/ex_8_22.sce
@@ -0,0 +1,20 @@
+//terms in a row become infinite//
+s=%s;
+//P=s^5+2*s^4+3*s^3+6*s^2+2*s+1;//
+//replace 's' by '1/z' to get F//
+z=%z;
+F=z^5+2*z^4+6*z^3+3*z^2+2*z+1
+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("system is stable")
+  end
+\ No newline at end of file