initial commit / add all books

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diff --git a/191/CH5/EX5.2/Example5_2.sce b/191/CH5/EX5.2/Example5_2.sce
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+//Theoritical bound on error

+//it needs Symbolic Toolbox

+//cd ~\Desktop\maxima_symbolic;

+//exec 'symbolic.sce'

+clc;

+clear;

+close();

+syms x;

+fx = log(x);

+n = 2;

+x0 = 2;

+x1 = 2.5;

+x2 = 3;

+diff1_fx = diff(fx,x);

+diff2_fx = diff(diff1_fx,x);

+diff3_fx = diff(diff2_fx,x);

+//so fx satisfies the continuity conditions on [2,3]

+x= poly(0,'x');

+eta = linspace(2,3,100);

+//fx-p2x is equal to

+func = (x-2)*(x-2.5)*(x-3)*2/(factorial(3)*eta^3);

+min_func = (x-2)*(x-2.5)*(x-3)*2/(factorial(3)*min(eta)^3);

+disp(min_func , 'func will be less than or equal to');

+x = 2.7;

+max_error = abs(horner(min_func,x));

+disp(max_error , 'Error does not exceed :');
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