1 files changed, 36 insertions, 0 deletions
diff --git a/1592/CH7/EX7.5/Example_7_5.sce b/1592/CH7/EX7.5/Example_7_5.sce
new file mode 100755
index 000000000..2df5f0f7a
--- /dev/null
+++ b/1592/CH7/EX7.5/Example_7_5.sce
@@ -0,0 +1,36 @@
+//Scilab Code for Example 7.5 of Signals and systems by
+//P.Ramakrishna Rao
+clc;
+clear x y1 y y2 q t n;
+clear;
+//y(t)=x(2*n)
+disp('y(n) depends upon past inputs for n<0');
+disp('y(n) depends upon future inputs for n>0');
+disp('Hence the system is Dynamic');
+x1=[1,3,5,3,2,5,3,9];//random variable
+x2=[2,4,6,4,2,4,2,1];
+for n=1:4
+    y1(1,n)=x1(2*n);
+    y2(1,n)=x2(2*n);
+end
+b1=2;
+b2=3;
+x=b1*x1+b2*x2;
+disp(x,'The input to the system is:');
+for n=1:4
+    q(1,n)=x(2*n);
+end
+disp(q,'This input gives the output:');
+y=b1*y1+b2*y2;
+disp(y,'For the system to be linear the output should be:');
+disp('Hence the system is linear');
+disp('For a delay (n0) of 2 seconds');
+disp('At n=3 seconds:');
+t=3;
+a=x(1,2*n-2);
+b=y(1,n-2);
+c=x(1,2*n-4);
+disp(a,'x(2n-n0):');
+disp(b,'is not equal to y(2n-n0):');
+disp(c,'while x(2n-2*n0):');
+disp('Hence the system is Time variant');