From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2294/CH4/EX4.9/EX4_9.sce | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 2294/CH4/EX4.9/EX4_9.sce

(limited to '2294/CH4/EX4.9/EX4_9.sce')

diff --git a/2294/CH4/EX4.9/EX4_9.sce b/2294/CH4/EX4.9/EX4_9.sce
new file mode 100755
index 000000000..96a57d8ac
--- /dev/null
+++ b/2294/CH4/EX4.9/EX4_9.sce
@@ -0,0 +1,31 @@
+//Find the covolution Of the following signals.
+//Example 4.9
+clc;
+clear;
+close;
+t=-10:.01:10;
+//input signal:x(t)=u(t-3)-u(t-5)
+for i=1:length(t)
+    if t(i)<3 | t(i)>5 then
+        x(i)=0;
+    else 
+        x(i)=1;
+    end
+    //h(t)=exp(-3*t)*u(t)
+    if t(i)>=0 then
+    h(i)=exp(-3.*t(i));
+else
+    h(i)=0;
+end
+end
+y=convol(h,x);//cconvolution of the above two signals
+subplot(3,1,1);
+plot(t,h,'red');
+xtitle('input response 2','t','h[t]');
+subplot(3,1,2);
+plot(t,x,'blue');
+xtitle('input response 2','t','x[t]');
+subplot(3,1,3);
+t1=-20:.01:20;
+plot(t1,y,'green');
+xtitle('output response','t','y[t1]');
-- 
cgit