SOLUTION:-
clc%clears screen
clear all%closes history
close all%closes all files
format long
X= 0:0.2:1;
Y= exp(-X).*cos(X);
x=0:0.01:1;
y=newton_interp(X,Y,x)
plot(x,yX,Y'0');
function y= newton_interp(X,Y,x)
format long
a=x;
b=y;
%x=input('Enter x:');
[m,n]=size(a)
fx=0;
for l=1:n
%--------------calculating dividing diference-----------
s=0;
for i=1:l
p=1;
for k=1:l % Denomlnator part product
if(k~=j)
p=p*(a(j)-a(k));
end
end
s=s+b(J)/p;%summalation f(x)/product
end
%---------------------------------------------------------------------------------------
p=1;
for J=1:1-1%coefficlent part of f [...]
p=p.*(x-a(J)));
end
fx=fx+s.*p; %Polynomlal!
end
y=fx;
end
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