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ASAAD123
solve the a linear system by Gauss elimination method;
\[x-y-2z=1, x-z=-1 ,x+2y-4z=2\]
showing whether it has a unique ,infinite number or no solution.
Hey , you can convert into Echelon form, and thereby finding the rank of the matrix, you can check consistency of the equations...
he means put it in matrix form
in [A b]|dw:1361621016524:dw|
|dw:1361621031962:dw|
find the echleon form (Gaussian) BEFORE doing row reduced echleon form (Gauss-Jordan) otherwise you will get conflicting results. Gaussian and Gauss Jordan require the same number of elementary row operations. So for example if it took 6 row operations to get to echleon (Gaussian) form, it should take 6 row operations to get to row reduced (Gauss-Jordan)