initial commit / add all books

1 files changed, 29 insertions, 0 deletions

diff --git a/2279/CH1/EX1.4/Ex1_4.sce b/2279/CH1/EX1.4/Ex1_4.sce
new file mode 100644
index 000000000..1f689f557
--- /dev/null
+++ b/2279/CH1/EX1.4/Ex1_4.sce
@@ -0,0 +1,29 @@
+clear

+clf

+clc

+t=-20:0.01:20;

+for i=1:length(t)

+    if t(i)>0 then

+        x1(i)=0.5;

+    else

+        x1(i)=-0.5;

+    end

+end

+subplot(3,1,1)

+plot(t,x1);

+xtitle("x1(t)=-0.5 for t<0 and x1(t)=0.5 for t>0","time","amplitude");

+xgrid(5);

+subplot(3,1,2)

+for i=1:length(t)

+    x2(i)=-t(i);

+end

+plot(t,x2);

+xtitle("x2(t)=-t for all t","time","amplitude");

+xgrid(5);

+subplot(3,1,3)

+for i=1:length(t)

+    x3(i)=t(i).^2;

+end

+plot(t,x3);

+xtitle("x3(t)=t^2 for all t","time","amplitude");

+xgrid(5);