Transformari liniare
Transformari liniare
Transformari liniare
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No¸tiunea de transformare liniară<br />
Transformări <strong>liniare</strong> între spa¸tii finit dimensionale<br />
Valori ¸si vectori proprii<br />
Diagonalizarea matricei unei transformări<br />
Polinom caracteristic<br />
Fie i astfel ca |xi| = max(|x1|, · · · , |xn|) de unde xi = 0. Ecua¸tia<br />
i este<br />
ai1x1 + · · · + (aii − λ)xi + · · · + ain = 0.<br />
Deducem<br />
de unde<br />
Urmează<br />
(aii − λ)xi = −<br />
|aii − λ||xi| ≤<br />
|aii − λ| ≤<br />
n<br />
j=1,j=i<br />
n<br />
j=1,j=i<br />
n<br />
j=1,j=i<br />
aijxj,<br />
|aij||xj|.<br />
|aij| |xj|<br />
≤ ri.<br />
|xi|<br />
Transformări <strong>liniare</strong>