Question

. Determinar a matriz X tal que

Answer 1

$x+\left[\begin{array}{c}1\\4\\7\end{array}\right]=\left[\begin{array}{c}5\\7\\2\end{array}\right]+\left[\begin{array}{c}1\\-1\\-2\end{array}\right]\\\\\\x+\left[\begin{array}{c}1\\4\\7\end{array}\right]=\left[\begin{array}{c}6\\6\\0\end{array}\right]\\\\\\x=\left[\begin{array}{c}6\\6\\0\end{array}\right]-\left[\begin{array}{c}1\\4\\7\end{array}\right]\\\\\\x=\left[\begin{array}{c}5\\2\\-7\end{array}\right]$