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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 />

Demonstra¸tie.<br />

Calculăm în două moduri f (e ′ j ).<br />

Rezultă<br />

f (e ′ j ) =<br />

=<br />

f (e ′ j<br />

n<br />

) = f (<br />

n<br />

n<br />

i=1<br />

cijei) =<br />

Matricea unei transformări<br />

Rela¸tia dintre rang ¸si defect<br />

Schimbarea matricei unei transformări <strong>liniare</strong><br />

n<br />

cijf (ei) =<br />

i=1<br />

cij akiek =<br />

i=1 k=1<br />

k=1 i=1<br />

n<br />

n<br />

n<br />

n n<br />

( akicij)ek.<br />

n n<br />

(<br />

a<br />

i=1<br />

′ ije′ i = a<br />

i=1<br />

′ ij ckiek = ckia<br />

k=1<br />

k=1 i=1<br />

′ ij )ek.<br />

A · C = C · A ′ .<br />

Transformări <strong>liniare</strong>

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