Mathematics, 21.06.2019 20:30 bullockarwen
Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*
Answers: 1
![\left[\begin{array}{ccc}4&2&6\\2&1&3\\-2&3&-4\end{array}\right] =0](/tpl/images/0001/5148/59fac.png)
![\left[\begin{array}{ccc}2&0&-2\\-7&1&5\\4&-2&0\end{array}\right] \\=2(10)-2(10)=0](/tpl/images/0001/5148/c959a.png)
![\left[\begin{array}{ccc}6&0&-2\\-2&0&6\\1&-2&0\end{array}\right] \\=2(36-2)=68](/tpl/images/0001/5148/918ff.png)
![\left[\begin{array}{ccc}5&10&5\\4&1&4\\-1&-2&-1\end{array}\right] \\=2(10)-2(10)=0](/tpl/images/0001/5148/fe9af.png)
=0
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