Metode Numerik 2 - Universitas Indonesia
Metode Numerik 2 - Universitas Indonesia
Metode Numerik 2 - Universitas Indonesia
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
124<br />
PD orde 1:<br />
PD orde 2:<br />
Aplikasi Iterasi Jacobi dan Gauss-Siedel pada PD dengan<br />
Syarat Batas<br />
(1)<br />
(2)<br />
Iterasi Jacobi:<br />
y'=<br />
d(x) − e(x)y<br />
y''=<br />
a(x) −b(x)y<br />
− c(x)y'<br />
(1)<br />
(2)<br />
y<br />
y<br />
(k)<br />
i<br />
(k)<br />
i<br />
≅<br />
1<br />
2e<br />
i<br />
h<br />
− y<br />
i−1<br />
(k-1)<br />
(k-1)<br />
( 2dh<br />
+ y − y )<br />
i<br />
i-1<br />
+ 2ehy<br />
⎛ cih<br />
⎞<br />
⎜1<br />
− ⎟y<br />
⎝ 2 ⎠<br />
i+<br />
1<br />
i<br />
i−1<br />
i<br />
−<br />
+ y<br />
i+<br />
1<br />
2 ⎛ cih<br />
⎞<br />
2<br />
( 2 −bh<br />
) y + ⎜1<br />
+ ⎟y<br />
≅ ah<br />
i<br />
≅ 2dh<br />
( ) ⎟ 1 ⎛ 2 ⎛ cih<br />
⎞ (k-1)<br />
⎛ cih<br />
⎞ (k-1)<br />
⎞<br />
≅ ⎜<br />
⎜−<br />
aih<br />
+ ⎜1<br />
− ⎟yi-1<br />
+ ⎜1<br />
+<br />
2<br />
⎟yi+<br />
1<br />
2 −bih<br />
⎝ ⎝ 2 ⎠ ⎝ 2 ⎠ ⎠<br />
Iterasi Gauss-Siedel (contoh untuk i membesar, i = 1, …, n-1):<br />
(1)<br />
(2)<br />
y<br />
y<br />
(k)<br />
i<br />
(k)<br />
i<br />
≅<br />
1<br />
2e<br />
i<br />
h<br />
(k) (k-1)<br />
( 2dh<br />
+ y − y )<br />
i<br />
i-1<br />
i+<br />
1<br />
( ) ⎟ 1 ⎛ 2 ⎛ cih<br />
⎞ (k) ⎛ cih<br />
⎞ (k-1)<br />
⎞<br />
≅ ⎜<br />
⎜−<br />
aih<br />
+ ⎜1<br />
− ⎟yi-1<br />
+ ⎜1<br />
+<br />
2<br />
⎟yi+<br />
1<br />
2 −bih<br />
⎝ ⎝ 2 ⎠ ⎝ 2 ⎠ ⎠<br />
(k)<br />
(k)<br />
Catatan, sesuai syarat batas: y 0 = y0<br />
yn<br />
= yn<br />
i<br />
i<br />
⎝<br />
2<br />
⎠<br />
i+<br />
1<br />
i