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I am doing my math homework, and I come across two problems I can't tend to do. Something always come up wrong. If anyone can help me, it is truly appreciated. Thank you so much.
I have to find the reduce echelon form for these two problems
![<br />
A=\[ \left( \begin{array}{ccccc}0 & 1 & 2 & 1\\2 & 1 & 0 & 2\\0 & 2 & 1 & 1\end{array} \right)\]<br />](http://latex.codecogs.com/png.latex?<br />
A=\[ \left( \begin{array}{ccccc}0 & 1 & 2 & 1\\2 & 1 & 0 & 2\\0 & 2 & 1 & 1\end{array} \right)\]<br />
)
Hello,
I am doing my math homework, and I come across two problems I can't tend to do. Something always come up wrong. If anyone can help me, it is truly appreciated. Thank you so much.
I have to find the reduce echelon form for these two problems
Originally Posted by jenjen
Hello,
I am doing my math homework, and I come across two problems I can't tend to do. Something always come up wrong. If anyone can help me, it is truly appreciated. Thank you so much.
I have to find the reduce echelon form for these two problems
Subtract twice the first row from the second, and subtract the first row from
the third:
![<br />
B=\[ \left( \begin{array}{ccccc}<br />
1 & -2 & 1 & 1 & 4\\<br />
2-2 & 1+4 & -3-2 & -1-2 & 6-8\\<br />
1-1 & -7+2 & -6-1 & 2-1 & 6-4<br />
\end{array} \right)\]<br />](http://latex.codecogs.com/png.latex?<br />
B=\[ \left( \begin{array}{ccccc}<br />
1 & -2 & 1 & 1 & 4\\<br />
2-2 & 1+4 & -3-2 & -1-2 & 6-8\\<br />
1-1 & -7+2 & -6-1 & 2-1 & 6-4<br />
\end{array} \right)\]<br />
)
Now add the second row to the last row:
]
Now finally divide the second row through by, and the third row by
to get:
RonL
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