Question

Determine o produto. A² em que A= [2 3]
5 1​

Answer 1

$\left[\begin{array}{cc}2&3\\5&1\\ \end{array}\right].\left[\begin{array}{cc}2&3\\5&1\\ \end{array}\right]=\left[\begin{array}{cc}2.2+3.5&2.3+3.1\\5.2+1.5&5.3+1.1\\ \end{array}\right]=\left[\begin{array}{cc}19&9\\15&16\\ \end{array}\right]$