initial commit / add all books

1 files changed, 17 insertions, 0 deletions

diff --git a/2279/CH1/EX1.3/eg1_3.sce b/2279/CH1/EX1.3/eg1_3.sce
new file mode 100755
index 000000000..90cc3f294
--- /dev/null
+++ b/2279/CH1/EX1.3/eg1_3.sce
@@ -0,0 +1,17 @@
+clc

+clear

+clf

+interval=input('enter the value of time interval T between two samples');

+t=(-20*interval):interval:(20*interval);

+for i=1:length(t)

+    if t(i)<0 then

+        x(i)=-1;

+    elseif t(i)>0 then

+        x(i)=1;

+    else

+        x(i)=0;

+    end

+end

+plot(t,x,".");

+xtitle("x(t)=1 for positive values of t..., x(t)=0 for t=0...., x(t)=-1 for negative values of t","time","amplitude");

+xgrid(5)