1 files changed, 21 insertions, 0 deletions
diff --git a/257/CH8/EX8.10/example_8_10.sce b/257/CH8/EX8.10/example_8_10.sce
new file mode 100644
index 000000000..c5a1af4c4
--- /dev/null
+++ b/257/CH8/EX8.10/example_8_10.sce
@@ -0,0 +1,21 @@
+s=%s
+P=s^4+2*s^2+1
+disp(routh_t(P)) 
+r=coeff(P)
+routh=routh_t(P)
+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("no sign changes, so no roots in RHS")
+   end
+    disp("s^2 is")
+    k=roots(routh(1,:))
+ disp(k)
+    
+    disp("since, s^2 is negetive, s is purely imaginary. hence the 4 roots are on the imaginary axis")
+\ No newline at end of file