Ok this is the system:

x1 + x2 + 2x3 - x4 = 4

x1 + 3x2 - 3x3 - x4 = 1

2x1 + 3x2 + 3x3 + x4 = 8

3x3 - 7x3 + x4 = -4

I need to solve it, and I am guessing its done by row operations, but I cant realy understand how its done.

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- March 25th 2009, 06:25 AMLooNiESolving the system of equations
Ok this is the system:

x1 + x2 + 2x3 - x4 = 4

x1 + 3x2 - 3x3 - x4 = 1

2x1 + 3x2 + 3x3 + x4 = 8

3x3 - 7x3 + x4 = -4

I need to solve it, and I am guessing its done by row operations, but I cant realy understand how its done. - March 25th 2009, 06:50 PMThePerfectHacker
Learn how it works first, go here.