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//Eg-10.9
//Pg-447
clear
clc
x = [6 9 14 17.5 20];
y = [5 3.04 4.68 2.7 4.75];
n = length(x); //no. of data points
for(i = 1:n-1)
s(i,1) = (y(i+1)-y(i))/(x(i+1)-x(i));
end
x = poly(0,'x');
for(i = 1:n-1)
f(i) = y(i) - s(i)*(x-6);
end
printf('The expressions for first order splines are :\n')
disp(f)
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