initial commit / add all books

9 files changed, 139 insertions, 0 deletions

diff --git a/2279/CH1/EX1.1/eg1_1.sce b/2279/CH1/EX1.1/eg1_1.sce
new file mode 100644
index 000000000..d7ce7efa3
--- /dev/null
+++ b/2279/CH1/EX1.1/eg1_1.sce
@@ -0,0 +1,15 @@
+
+
+
+
+
+clf

+clc

+clear

+t=[-20:0.01:20];

+for i=1:length(t)

+    x=2;

+end

+plot(t,x);

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

+xgrid(5)

diff --git a/2279/CH1/EX1.10/eg1_10.sce b/2279/CH1/EX1.10/eg1_10.sce
new file mode 100755
index 000000000..e9a16362a
--- /dev/null
+++ b/2279/CH1/EX1.10/eg1_10.sce
@@ -0,0 +1,16 @@
+clear

+clf

+clc

+n=-20:1:20;

+for i=1:length(n)

+        x(i)=0.5;

+end

+subplot(2,1,1)

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

+xtitle("x(n)=0.5 for all n","number of samples","amplitude");

+xgrid(5)

+y=0.5*x;

+subplot(2,1,2)

+plot(n,y,".");

+xtitle("y(n)=0.5*x(n) for all n","number of samples","amplitude");

+xgrid(5)

diff --git a/2279/CH1/EX1.2/eg1_2.sce b/2279/CH1/EX1.2/eg1_2.sce
new file mode 100755
index 000000000..4757f4c1d
--- /dev/null
+++ b/2279/CH1/EX1.2/eg1_2.sce
@@ -0,0 +1,10 @@
+clf

+clear

+clc

+t=[-20:0.01:20];

+for i=1:length(t)

+    x=2*t;

+end

+plot(t,x);

+xtitle("x(t)=2*t for all t","time","amplitude");

+xgrid(5)

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)

diff --git a/2279/CH1/EX1.4/eg1_4.sce b/2279/CH1/EX1.4/eg1_4.sce
new file mode 100755
index 000000000..1f689f557
--- /dev/null
+++ b/2279/CH1/EX1.4/eg1_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);

diff --git a/2279/CH1/EX1.5/eg1_5.sce b/2279/CH1/EX1.5/eg1_5.sce
new file mode 100755
index 000000000..4f3bb9b34
--- /dev/null
+++ b/2279/CH1/EX1.5/eg1_5.sce
@@ -0,0 +1,14 @@
+clear

+clf

+clc

+n=-20:1:20;

+for i=1:length(n)

+    if n(i)>=0 then

+        x(i)=2;

+    else

+        x(i)=0;

+    end

+end

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

+xtitle("x(n)=0 for n<0 and x(n)=2 for n>=0","number of samples","amplitude");

+xgrid(5)

diff --git a/2279/CH1/EX1.6/eg1_6.sce b/2279/CH1/EX1.6/eg1_6.sce
new file mode 100644
index 000000000..d1201001c
--- /dev/null
+++ b/2279/CH1/EX1.6/eg1_6.sce
@@ -0,0 +1,22 @@
+clc

+clear

+clf

+n1=-2:1:2;

+x1=-2:1:2;

+subplot(3,1,1)

+plot(n1,x1,".");

+xtitle("x1(n)","n","x1(n)");

+xgrid(5)

+n=-20:1:20;

+for i=1:length(n)

+   x2(i)=n(i);

+   x3(i)=2-n(i);

+end

+subplot(3,1,2);

+plot(n,x2,".");

+xtitle("x2(n)","n","x2(n)");

+xgrid(5);

+subplot(3,1,3);

+plot(n,x3,".");

+xtitle("x3(n)","n","x3(n)");

+xgrid(5);

diff --git a/2279/CH1/EX1.7/eg1_7.sce b/2279/CH1/EX1.7/eg1_7.sce
new file mode 100755
index 000000000..d090d46d7
--- /dev/null
+++ b/2279/CH1/EX1.7/eg1_7.sce
@@ -0,0 +1,11 @@
+clear 

+clf

+clc

+interval=input('enter the sampling interval');

+n=[-20:1:20];

+t=n*interval

+for i=1:length(t)

+    x(i)=2*t(i);

+end

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

+xtitle("sampled function of x(t)=2*t for all t","number of samples","amplitude");

diff --git a/2279/CH1/EX1.8/eg1_8.sce b/2279/CH1/EX1.8/eg1_8.sce
new file mode 100755
index 000000000..09c51e6d7
--- /dev/null
+++ b/2279/CH1/EX1.8/eg1_8.sce
@@ -0,0 +1,5 @@
+x=poly([-4 2 1],'t','c')

+a=horner(x,0)

+b=horner(x,-2)

+disp(a)

+disp(b)