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

---
 40/CH5/EX5.4/Exa_5_4.sce   |  20 ++++++++++++++++++++
 40/CH5/EX5.4/Exa_5_4_0.jpg | Bin 0 -> 13965 bytes
 40/CH5/EX5.4/Exa_5_4_1.jpg | Bin 0 -> 12864 bytes
 3 files changed, 20 insertions(+)
 create mode 100755 40/CH5/EX5.4/Exa_5_4.sce
 create mode 100755 40/CH5/EX5.4/Exa_5_4_0.jpg
 create mode 100755 40/CH5/EX5.4/Exa_5_4_1.jpg

(limited to '40/CH5/EX5.4')

diff --git a/40/CH5/EX5.4/Exa_5_4.sce b/40/CH5/EX5.4/Exa_5_4.sce
new file mode 100755
index 000000000..c04a7543a
--- /dev/null
+++ b/40/CH5/EX5.4/Exa_5_4.sce
@@ -0,0 +1,20 @@
+//DTfT of periodic signals
+x=[3 2 1 2];//one period of signal
+n=0:3;
+k=0:3;
+x1=x*exp(%i*n'*2*k*%pi/4)
+dtftx=abs(x1)
+x=[3 2 1 2 3 2 1 2 3];
+n=-4:4;
+a=gca();
+a.y_location="origin";
+a.x_location="origin";
+plot2d3('gnn',n,x);
+xtitle('discrete periodic time signal');
+x2=[dtftx dtftx 8];
+a=gca();
+xset('window',1);
+a.x_location="origin";
+a.y_location="origin";
+plot2d3('gnn',n,x2);
+xtitle('DTFT of discrete periodic signal');
\ No newline at end of file
diff --git a/40/CH5/EX5.4/Exa_5_4_0.jpg b/40/CH5/EX5.4/Exa_5_4_0.jpg
new file mode 100755
index 000000000..efd03636f
Binary files /dev/null and b/40/CH5/EX5.4/Exa_5_4_0.jpg differ
diff --git a/40/CH5/EX5.4/Exa_5_4_1.jpg b/40/CH5/EX5.4/Exa_5_4_1.jpg
new file mode 100755
index 000000000..f2557d814
Binary files /dev/null and b/40/CH5/EX5.4/Exa_5_4_1.jpg differ
-- 
cgit