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authorpriyanka2015-06-24 15:03:17 +0530
committerpriyanka2015-06-24 15:03:17 +0530
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initial commit / add all books
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+//Example 7.61b
+clc;
+syms z n;
+x1=(1/3)^n;
+X1=symsum(x1*(z^-n),n,0,%inf);
+x2=(1/2)^n;
+X2=symsum(x2*(z^-n),n,-%inf,-1);
+X=X1+X2; \ No newline at end of file