3. Nelinearni sistemi
3. Nelinearni sistemi
3. Nelinearni sistemi
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Jacobijeva iteracija in testni primer<br />
Če vzamemo začetni približek x (0) = (0.4, 0.1, −0.4), potem iz<br />
dobimo zaporedje<br />
x (r+1)<br />
1<br />
= 1 3<br />
x (r+1)<br />
2<br />
= 1 9<br />
x (r+1)<br />
3<br />
= − 1<br />
20<br />
(<br />
cos(x (r)<br />
1 x(r)<br />
√<br />
(x (r)<br />
2 ) + 0.6 )<br />
1 )2 + sin(x (r)<br />
3<br />
) + 1.1 − 0.1<br />
(<br />
)<br />
e −x(r) 1 x(r) 2 + 9.1 ,<br />
r<br />
3<br />
‖x (r) − x (r−1) ‖ ∞ ‖F (x (r) )‖ ∞<br />
1 0.533066702220 0.003672183829 −0.503039471957 1.3 · 10 −1 <strong>3.</strong>7 · 10 −1<br />
2 0.533332694686 0.005530371351 −0.504902219788 1.9 · 10 −3 1.3 · 10 −3<br />
3 0.533331883381 0.005451521829 −0.504852740886 7.9 · 10 −5 4.2 · 10 −5<br />
4 0.533331924436 0.005454006133 −0.504854837609 2.5 · 10 −6 1.8 · 10 −6<br />
5 0.533331923152 0.005453901274 −0.504854771543 1.0 · 10 −7 5.6 · 10 −8<br />
6 0.533331923206 0.005453904579 −0.504854774331 <strong>3.</strong>3 · 10 −9 2.4 · 10 −9<br />
7 0.533331923204 0.005453904439 −0.504854774243 1.4 · 10 −10 7.5 · 10 −11<br />
8 0.533331923204 0.005453904444 −0.504854774247 4.4 · 10 −12 <strong>3.</strong>2 · 10 −12<br />
x (r)<br />
1<br />
x (r)<br />
2<br />
x (r)<br />
Bor Plestenjak - Numerična analiza 2004