Metode Numerik 2 - Universitas Indonesia
Metode Numerik 2 - Universitas Indonesia
Metode Numerik 2 - Universitas Indonesia
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Contoh, interpolasi Lagrange kubik:<br />
∏<br />
∏<br />
∑ ∑<br />
≠<br />
≠<br />
= =<br />
⎟<br />
⎟<br />
⎠<br />
⎞<br />
⎜<br />
⎜<br />
⎝<br />
⎛<br />
−<br />
−<br />
=<br />
⎟<br />
⎟<br />
⎠<br />
⎞<br />
⎜<br />
⎜<br />
⎝<br />
⎛<br />
−<br />
−<br />
=<br />
=<br />
j<br />
s s<br />
j<br />
s<br />
j<br />
i<br />
k k<br />
i<br />
k<br />
i<br />
3<br />
0<br />
i<br />
3<br />
0<br />
j<br />
j<br />
i<br />
j<br />
i<br />
y<br />
y<br />
y<br />
y<br />
)<br />
y<br />
l(y,<br />
x<br />
x<br />
x<br />
x<br />
)<br />
x<br />
l(x,<br />
)<br />
y<br />
,<br />
)f(x<br />
y<br />
l(y,<br />
)<br />
x<br />
l(x,<br />
y)<br />
p(x,<br />
77