Question

Determine o produto entre as seguintes matrizes:


║25 17║ ║10 5║
║18 20║ - ║9 2 ║

Answer 1

Resposta:

$\left[\begin{array}{cc}403&159\\360&130\end{array}\right]$

Explicação passo-a-passo:

$\left[\begin{array}{cc}25&17\\18&20\end{array}\right] *\left[\begin{array}{cc}10&5\\9&2\end{array}\right] \\\\a_{11}=25*10+17*9=403\\a_{12}=25*5+17*2=159\\a_{21}=18*10+20*9=360\\a_{22}=18*5+20*2=130\\\\\left[\begin{array}{cc}403&159\\360&130\end{array}\right]$