Indicate whether the matrix is in row-reduced form.

Mathematics
Tutor: None Selected Time limit: 1 Day

Oct 19th, 2015

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Operation
1:

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 

 

 

 

 

 

 

 

interchange the 3rd row and the 4th row

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 

 

 

 

 

 

 

 

Row
Operation
2:

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 0 

 0 

 1 

 8 

 

 

 

 

multiply the 4th row by 1/2

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 0 

 0 

 1 

 8 

 

 

 

 

Row
Operation
3:

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 

 

 

 

 

 

 

 

add -8 times the 4th row to the 3rd row

 1 

 0 

 0 

 9 

 0 

 1 

 0 

 6 

 

 

 

 

 0 

 0 

 0 

 1 

Row
Operation
4:

 1 

 0 

 0 

 9 

 

 

 

 

 0 

 0 

 1 

 0 

 

 

 

 

add -6 times the 4th row to the 2nd row

 1 

 0 

 0 

 9 

 

 

 

 

 0 

 0 

 1 

 0 

 0 

 0 

 0 

 1 

Row
Operation
5:

 

 

 

 

 0 

 1 

 0 

 0 

 0 

 0 

 1 

 0 

 

 

 

 

add -9 times the 4th row to the 1st row

 

 

 

 

 0 

 1 

 0 

 0 

 0 

 0 

 1 

 0 

 0 

 0 

 0 

 1 

  The matrix is not in row reduction form

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Oct 19th, 2015

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