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3. Nelinearni sistemi

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Metode za iskanje minimuma gladke funkcije n spremenljivk<br />

Splošni nastavek je, da se iterativno monotono približujemo minimumu. Naj bo x (r) tekoči<br />

približek. Izberemo vektor (smer) v r ∈ R n in v tej smeri poiščemo naslednji približek<br />

tako da bo G(x (r+1) ) < G(x (r) ).<br />

x (r+1) = x (r) + λ r v r ,<br />

Pogledati moramo:<br />

• kako izberemo smer v r ,<br />

• kako določimo λ.<br />

Bor Plestenjak - Numerična analiza 2004

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