Use elementary row operations to find the reduced row echelon form

singing

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(a) Use elementary row operations to find the reduced row echelon form of the matrix
M =


[1 0 4
0 0 5
0 1 −2]

(b) For the elememtary row operations you used in (a), construct the corresponding elementary
matrices. Clearly identify which matrix corresponds to which row operation.
(c)
(i) Explain whether or not M is invertible using your answer from part (a).
(ii) If M is invertible, compute M−1 as a product of the elementary matrices you found in
part (b).
 
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(a) Use elementary row operations to find the reduced row echelon form of the matrix
M =


[1 0 4
0 0 5
0 1 −2]

(b) For the elememtary row operations you used in (a), construct the corresponding elementary
matrices. Clearly identify which matrix corresponds to which row operation.
(c)
(i) Explain whether or not M is invertible using your answer from part (a).
(ii) If M is invertible, compute M−1 as a product of the elementary matrices you found in
part (b).

You posted this problem at several sites without showing a line of effort!

https://sg.answers.yahoo.com/question/index?qid=20140822161414AA52xyq

https://in.answers.yahoo.com/question/index?qid=20140823042358AAP1cS5&act=aq

http://www.mapleprimes.com/questions/202244-a-Use-Elementary-Row-Operations-To

Please share your work with us ...

If you are stuck at the beginning tell us and we'll start with the definitions.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

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