blob: 0f47285e1884bcd2e7d2f6814954982704dab379 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
//Example 6.9
clc
clear
x = 0.1:0.1:0.5;
y = [1.4 1.56 1.76 2 2.28];
n = length(x);
del = %nan*ones(n,5);
del(:,1) = y';
for j = 2:5
for i = 1:n-j+1
del(i,j) = del(i+1,j-1) - del(i,j-1);
end
end
del(:,1) = [];
X = poly(0, "X");
h = x(2) - x(1);
p = (X-x(1)) / h;
x0 = x(1);
y0 = y(1);
dely0 = del(1,:);
Y = y0;
for i = 1:length(dely0)
t = 1;
for j = 1:i
t = t * (p-j+1);
end
Y = Y + t*dely0(i)/factorial(i);
end
Y = round(Y*10^2)/10^2;
disp(Y,"Required Newton''s Interpolating Polynomial:")
|
