1 files changed, 17 insertions, 0 deletions
diff --git a/2279/CH1/EX1.3/Ex1_3.sce b/2279/CH1/EX1.3/Ex1_3.sce
new file mode 100644
index 000000000..90cc3f294
--- /dev/null
+++ b/2279/CH1/EX1.3/Ex1_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)