1 files changed, 14 insertions, 0 deletions
diff --git a/257/CH5/EX5.21/example_5_21.sce b/257/CH5/EX5.21/example_5_21.sce
new file mode 100644
index 000000000..65046d483
--- /dev/null
+++ b/257/CH5/EX5.21/example_5_21.sce
@@ -0,0 +1,14 @@
+s=%s;
+syms t s;
+
+F=(1- (3*%e^(-2*t)) + (2*%e^(-3*t))  );
+y=laplace(F,t,s);
+
+G=1
+x=laplace(G,t,s);
+
+disp((y/x),"closed loop transfer function is")
+
+T=y/x;
+
+disp((T/(1-T)) , "openloop transfer function is")
+\ No newline at end of file