initial commit / add all books

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diff --git a/2087/CH4/EX4.62/example4_62.sce b/2087/CH4/EX4.62/example4_62.sce
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+//example 4.62

+//ordinates of 1 hr unit hydrograph

+clc;funcprot(0);

+//given

+t=[0:1:12];     //time

+O=[0 0 54 0 175 0 127 0 58 0 25 0 0 0];           //ordinate of 2 hr unit hydrograph

+of(1)=0;

+of(2)=0;

+for i=3:13

+    if modulo(i,2)==0;

+        of(i)=0;

+    

+else 

+    of(i)=O(i-2)+of(i-2);

+end

+end

+s=[0 25 54 120 229 300 356 390 414 430 439 439 439];     //Ordinates of S-curve

+for i=2:13

+    of1(i)=s(i-1);

+end

+mprintf("ordinates of 1 hr unit hydrograph:");

+for i=1:13

+    y(i)=s(i)-of1(i);

+u(i)=y(i)*2;

+mprintf("\n%i",u(i));

+end

+//graph is plotted between u and t

+