initial commit / add all books

3 files changed, 23 insertions, 0 deletions

diff --git a/62/CH1/EX1.41/ex_1_41.sce b/62/CH1/EX1.41/ex_1_41.sce
new file mode 100755
index 000000000..461143d80
--- /dev/null
+++ b/62/CH1/EX1.41/ex_1_41.sce
@@ -0,0 +1,23 @@
+clear;

+close;

+clc;

+n=-2:4;

+x1=[0 0 0 0 2 0 0];

+y1=[0 0 0 0 1 2 0];

+x2=[0 1 0 0 0 0 0];

+y2=[0 2 1 0 0 0 0];

+x3=[0 0 0 1 2 0 0];

+y3=[0 0 0 2 3 1 0];

+subplot(3,2,1);plot2d3(n,x1);plot(n,x1,'r.');xtitle('x1')

+subplot(3,2,2);plot2d3(n,y1);plot(n,y1,'r.');xtitle('y1')

+subplot(3,2,3);plot2d3(n,x2);plot(n,x2,'r.');xtitle('x2')

+subplot(3,2,4);plot2d3(n,y2);plot(n,y2,'r.');xtitle('y2')

+subplot(3,2,5);plot2d3(n,x3);plot(n,x3,'r.');xtitle('x3')

+subplot(3,2,6);plot2d3(n,y3);plot(n,y3,'r.');xtitle('y3')

+disp("it can be seen that x3[n]=x1[n]+x2[n-2] therefore for linear system        y3[n]=y1[n]+y2[n-2]")

+figure

+subplot(4,1,1);plot2d3(n,y1);plot(n,y1,'r.');xtitle('y1')

+subplot(4,1,2);plot2d3(n+2,y2);plot(n+2,y2,'r.');xtitle('y2[n-2]')

+subplot(4,1,3);plot2d3(n,y1+[0 0 y2(1:find(n+2==4))]);plot(n,y1+[0 0 y2(1:find(n+2==4))],'r.');xtitle('y1[n]+y2[n-2]')

+subplot(4,1,4);plot2d3(n,y3);plot(n,y3,'r.');xtitle('y3[n]')

+disp("from the figure y3[n]<>y1[n]+y2[n-2] therefore the system is not linear")

diff --git a/62/CH1/EX1.41/ex_1_41_1.png b/62/CH1/EX1.41/ex_1_41_1.png
new file mode 100755
index 000000000..f3b6b4243
--- /dev/null
+++ b/62/CH1/EX1.41/ex_1_41_1.png
diff --git a/62/CH1/EX1.41/ex_1_41_2.png b/62/CH1/EX1.41/ex_1_41_2.png
new file mode 100755
index 000000000..eef9e877e
--- /dev/null
+++ b/62/CH1/EX1.41/ex_1_41_2.png