Hi, I need help with a question -
I need to use Gaussian elimination and back substitution to solve the following system:
0 + 4x2 – 3x3 = 3
-x1 + 7x2 – 5x3 = 4
-x1 + 8x2 - 6x3 = 5
Since the first pivotal position is 0, I interchange rows one and two before eliminating numbers below the pivot. I'm not sure what to do after that.
Thanks for any help.