Question

Escreva as matriz:

a ) A = ( aij ) 2x3 tal que aij = i2+ j2.

b ) B = ( aij ) 4x2 de modo que aij = 2i 2 -j .​

Answer 1

Resposta:

$a) A = \left[\begin{array}{ccc}2*1+2*1&2*1+2*2&2*1+2*3\\2*2+2*1&2*2+2*2&2*2+2*3\end{array}\right] =\left[\begin{array}{ccc}4&6&8\\6&8&10\end{array}\right]$

$b) B = \left[\begin{array}{ccc}2*1-2*1&2*1-2*2\\2*2-2*1&2*2-2*2\\2*3-2*1&2*3-2*2\\2*4-2*1&2*4-2*2\end{array}\right] =\left[\begin{array}{ccc}0&-2\\2&0\\4&2\\6&4\end{array}\right]$

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