Linear Algebra

junam

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Joined
Dec 31, 2013
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12
For what values of the constant k does the following system have a unique solution?Also find the solution. What is the case if k does not take on this value?
2x+4z=6,3x+y+z=-1,2y-z=-2,x-y+kz=-5
 
I have snapped the solution and attached the pic. Not sure how to write matrices here, that is why I wrote on a paper and snapped it.
Please let me know if it is not clear.

1.jpg2.jpg

Denis , your answer is correct.
 
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Only first two pictures are the unique ones, the rest are their duplicates, I uploaded them more than once by mistake. I tried removing it, but I could not. I am sorry.
 
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