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X - FIIT STU

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(4) Nech A je štvorcová matica a nech matica B vznikne z A tak, že násobok<br />

vybraného stĺpca (riadka) pripočítame k inému stĺpcu (riadku)<br />

A = s ,..., s ,..., s ,..., s → B = s ,..., s +αs ,..., s ,..., s<br />

potom<br />

( 1 i j n) ( 1 i j j n)<br />

B = A<br />

(5) Nech A je štvorcová matica a nech pre jej vybraný stĺpec platí s i<br />

= s i<br />

′ + s i<br />

′′<br />

A = ( s1 ,..., s′ ′′<br />

i<br />

+ si,...,<br />

s<br />

n)<br />

potom<br />

A = A′ + A ′′<br />

kde matica A' (A'') vznikne z pôvodnej matice tak, že i-tý stĺpec s<br />

i<br />

je nahradený<br />

stĺpcovým vektorom s i<br />

′( s i<br />

′′ )<br />

A′ = s ,..., s′ ,..., s , A′′ = s ,..., s′′<br />

,..., s<br />

( ) ( )<br />

1 i n 1 i n<br />

Priesvitka 36

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