Question

Resolva as matrizes [8 7 2]-[3 6 3] Tem mais uma na foto. Se possível ajudarem agradeço é urgente.

Answer 1

a)

$\left[\begin{array}{c}8\\7\\2\end{array}\right] - \left[\begin{array}{c}3\\6\\3\end{array}\right] = \left[\begin{array}{c}8-3\\7-6\\2-3\end{array}\right] = \left[\begin{array}{c}5\\1\\-1\end{array}\right]$

b)

$\left[\begin{array}{cc}2&3\\1&4\end{array}\right] - \left[\begin{array}{cc}0&2\\1&5\end{array}\right] = \left[\begin{array}{cc}2-0&3-2\\1-1&4-5\end{array}\right] = \left[\begin{array}{cc}2&1\\0&-1\end{array}\right]$

c)

$\left[\begin{array}{ccc}1&2&4\\6&3&10\end{array}\right] - \left[\begin{array}{ccc}0&1&2\\6&5&1\end{array}\right] = \left[\begin{array}{ccc}1-0&2-1&4-2\\6-6&3-5&10-1\end{array}\right] = \left[\begin{array}{ccc}1&1&2\\0&-2&9\end{array}\right]$

Answer 2

As respectivas soluções:

$a)\left[\begin{array}{cc}5&\\1&\\-1\end{array}\right]$

$b)\left[\begin{array}{ccc}2&1&\\0&-1\\\end{array}\right]$

$c)\left[\begin{array}{ccc}1&1&2\\0&-2&9\\\end{array}\right]$

SUBTRAÇÃO DE MATRIZES

As matrizes envolvidas na subtração devem pertencer à mesma ordem. E a diferença entre elas será outra matriz, de mesma ordem.

Questão 10

Resolva as matrizes:

As matrizes envolvidas são de ordem 3x1.

$a)\left[\begin{array}{cc}8&\\7&\\2\end{array}\right] -\left[\begin{array}{ccc}3&\\6&\\3&\end{array}\right] =$

    $\left[\begin{array}{cc}8-3&\\7-6&\\2-3\end{array}\right]=$

    $\left[\begin{array}{cc}5&\\1&\\-1\end{array}\right]$

As  matrizes envolvidas são de ordem 2 x 2:

$b) \left[\begin{array}{ccc}2&3\\1&4\\\end{array}\right]- \left[\begin{array}{ccc}0&2\\1&5\\\end{array}\right] =$

   $\left[\begin{array}{ccc}2-0&3-2&\\1-1&4-5\\\end{array}\right]=$

   $\left[\begin{array}{ccc}2&1&\\0&-1\\\end{array}\right]$

As matrizes envolvidas são de ordem 2 x 3:   

$c) \left[\begin{array}{ccc}1&2&4\\6&3&10\\\end{array}\right] \left[\begin{array}{ccc}0&1&2\\6&5&1\\\end{array}\right] =$

   $\left[\begin{array}{ccc}1-0&2-1&4-2\\6-6&3-5&10-1\\\end{array}\right]=$

   $\left[\begin{array}{ccc}1&1&2\\0&-2&9\\\end{array}\right]$

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