20.07.2013 Views

Software matematic

Software matematic

Software matematic

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

130 Funct¸ii de funct¸ii<br />

Problema 5.17. Să se rezolve numeric sistemul<br />

9x 2 +36y 2 +4z 2 −36 = 0,<br />

x 2 −2y 2 −20z = 0,<br />

x 2 −y 2 +z 2 = 0<br />

Indicat¸ie. Sunt patru solut¸ii. Valori bune de pornire [±1,±1,0] T .<br />

Problema 5.18. Să considerăm sistemul, inspirat dintr-un exemplu din industria chimică<br />

fi := βa 2 i +ai −ai−1 = 0.<br />

Sistemul are n ecuat¸ii s¸i n+2 necunoscute. Vom lua a0 = 5, an = 0.5 mol/litru. Să<br />

se rezolve sistemul pentru n = 10 s¸i valoarea de pornire x=[1:-0.1:0.1]’.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!