Question

помогите решить задания по матрице.      МОЙ ВАРИАНТ 23

0935efa1ace509b4325b7e3256fd166d.doc

Answer 1

$A= left[begin{array}{ccc}1&3\0&2\end{array}right]$
$B= left[begin{array}{ccc}2&1\-3&0\end{array}right]$
$C= left[begin{array}{ccc}2&5\1&1\end{array}right]$
$A^T= left[begin{array}{ccc}1&0\3&2\end{array}right]$
$C^T= left[begin{array}{ccc}2&1\5&1\end{array}right]$
$D=( frac{1}{3}* left[begin{array}{ccc}1&0\3&2\end{array}right]+ frac{1}{9}* left[begin{array}{ccc}2&1\-3&0\end{array}right])* left[begin{array}{ccc}2&1\5&1\end{array}right]=( left[begin{array}{ccc}0.33&0\1&0.66\end{array}right]+ left[begin{array}{ccc}0.22&0.11\-0.3&0\end{array}right] )* left[begin{array}{ccc}2&1\5&1\end{array}right]= left[begin{array}{ccc}0.55&0.11\0.7&0.66\end{array}right]* left[begin{array}{ccc}2&1\5&1\end{array}right]=  [tex] left[begin{array}{ccc}1.65&0.66\4.7&1.36\end{array}right]$