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A dump of our free Chat sessions, in case it is useful. It excludes white boards used during paid sessions.

tutorsandi : Hello......
student : hi
student : I would like to find all 3x3 matrices A such that
student : [x,y,z]
student : =
student : [x-y]
student : [-2x+3y-4z]
student : [y-5z]
student : I solved the first one and got 1 -1 0
student : but cannot apply the same concept to the other ones
student : what?
student : it's linear algebra
tutorsandi : did not get you question ?
tutorsandi : right hand size of the matrix?
student : A(x y z) =
student : that's a 3*1 matric
tutorsandi : ok.
student : and then the other matrix has
student : (x-y) on top
student : (-2x+3y-4z) in middle
student : (y-5z) on bottom
student : so I need to find a matrix that satisfies these
tutorsandi : pls. wait.
student : thanks
tutorsandi : A = [ 1 -1 0]
tutorsandi : A = [ 1 -1 0] in top
student : yes I had that one
tutorsandi : [ -2 3 -4] in the middle
student : are you sure
student : because then the bottom would be
tutorsandi : and [0 1 -5] in bottom
student : 0 1 -5
tutorsandi : Hello.. ?
student : yes
student : That's what I got but I wasn't sure...
tutorsandi : got my answers ?
student : I have more questions yes!
tutorsandi : but only one is free .
student : I can pay
student : how qualified are you
student : what are you qualifications
student : and can you do Skype
student : and work quicker?
tutorsandi : yes.
tutorsandi : we are enough qualified . we have a team of qualified math expart.
student : how much is it
student : where are you from
tutorsandi : we will send quotes.
tutorsandi : tutor@aafter.com
tutorsandi : Please note, due to lack of resources, we can only do 1 problem FREE in 24 hours period. You can always come back tomorrow for another free problem. Please, tell your friends about our free service - 1 free in 24 hours
student : Ok thank you!

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