Fizaa A.

asked • 07/30/20

Please help me with this question.


Matrix

LaTeX: \left[\begin{array}{rrrr}
1&2&1&3\\
0&0&1&4\\
0&0&0&0
\end{array}\right] 

is Not in reduced echelon form because

A.)the last column has two non-zero elements.

B.)ther than the leading 1 in the 3rd column, there is anothe non-zero element.

C.)the non-zero element in column 2 is not 1.

D.)the matrix is not a square matrix.


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