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ya, u are doing it right, just sub the currents back into the system of equations to see if it is working out
I only know the matrix and the Reduce Row Echelon (Gaussian Elimination) . As Dan mentioned, substitute the values you got from using row operations and see if x, y, and z work out for each equation that was given.
At the bottom i have put them back into the equation twice and the both work out fine but with a very small error.
Ok i have just spoken with the tutor and he said i dont have to have another method as i have proven by sub back into my question.
So for what i have put as my answer would someone be able to highlight the method and techniques used.i.e. break down into small groups
you know how yo said what you was doing with the last question in stages would you be able to do that for what i have already done. e.g. sub 2 into and it gives us.
I can do the Gauss elimination
ok I have attached what i have done above which has been marked correctly
please wait I write my answer as PDF file
thank you. i will pop to lunch as if not i will miss t today. And to think these are the easy questions. I'm dreading next lesson as i will be getting the last assignment back for further maths and I think i did terrible.
please wait, I'm working on your file...
tip: keep your answers for x y and z in fraction form. decimals are a pain.
Though I have to confess.. RREF (reduced row echelon form) would've been better.