Question

Нужно найти матрицу C

Answer 1

$A=\left[\begin{array}{cc}3&-1\\6&8\\-2&3\end{array}\right] \\B=\left[\begin{array}{ccc}-2&1&0\\-7&1&-2\end{array}\right] \\B^{T}=\left[\begin{array}{cc}-2&-7\\1&1\\0&-2\end{array}\right] \\\\2B^{T}=\left[\begin{array}{cc}-4&-14\\2&2\\0&-4\end{array}\right] \\\\A-2B^{T}=\left[\begin{array}{cc}3&-1\\6&8\\-2&3\end{array}\right]-\left[\begin{array}{cc}-4&-14\\2&2\\0&-4\end{array}\right] =\left[\begin{array}{cc}7&13\\4&6\\-2&7\end{array}\right]$