Mathematics, 09.03.2021 09:10, jamine
Determine the cofactor of a13 the matrix. A=[ matrix 2&-4&0\\ 6&5&7\\ 5&2&0 matrix ]
Answers: 3
![\left[\begin{array}{ccc}2&-4&0\\6&5&7\\5&2&0\end{array}\right]](/tpl/images/1180/0800/3e9c3.png)
![a_{13} \det(\left[\begin{array}{cc}6&5\\5&2\end{array}\right] ) -a_{23} \det \ (\left[\begin{array}{cc}2&-4\\5&2\end{array}\right] ) +a_{33} \det(\left[\begin{array}{cc}2&-4\\6&5\end{array}\right] )](/tpl/images/1180/0800/93e38.png)
![=0 -(7)[(2)(2)-(-4)(5)] +0](/tpl/images/1180/0800/97808.png)
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Determine the cofactor of a13 the matrix. A=[ matrix 2&-4&0\\ 6&5&7\\ 5&2&0...
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