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Web skærmformat. - Aarhus Universitet

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V. Matricer – 1. Vektorer og matricer 380<br />

Associativ lov<br />

Distributive love<br />

A + (B + C) = (A + B) + C<br />

A(B + C) = AB + AC<br />

(A + B)C = AC + BC<br />

1.25. Pas på<br />

Advarsler<br />

Den kommutative lov holder ikke<br />

Normalt er<br />

☞ [LA] 2 Matricer<br />

<br />

0<br />

AB = BA<br />

<br />

0 0 0 0<br />

=<br />

<br />

0<br />

Nulreglen gœlder ikke<br />

1 0 0 1<br />

<br />

0 0 0 0<br />

=<br />

0 1 1 0<br />

0 0<br />

<br />

0 0<br />

1 0<br />

A = 0, B = 0, AB = 0<br />

1.26. Test matrix multiplikation ☞ [LA] 2 Matricer<br />

Test

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