initial commit / add all books

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diff --git a/2915/CH5/EX5.2/Ex5_2.sce b/2915/CH5/EX5.2/Ex5_2.sce
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+//Example 5.2

+//To sketch the graph of function of 1+cos(x) in given interval

+clear,clc;

+

+x = linspace(-0,2*%pi,50);

+y = 1+cos(x) ;

+set(gca(),"grid",[5 5]);

+plot(x,y);

+xlabel("$0\le x\le 2*pi$","fontsize",4,"color","red");

+ylabel("$y(x)=1+cos(x)$","fontsize",4,"color","red");

+title("Example 5.2","color","blue","fontsize",9);

diff --git a/2915/CH5/EX5.2/plot5_2.jpeg b/2915/CH5/EX5.2/plot5_2.jpeg
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