I have been given the 3 following simultaneous equations
and the question is:
"(a) Solve the equations using Gaussian elimination, showing all your working."
fairly simple topic i know, but i cant get the answer :/
The Attempt at a Solution
Had a few attempts at it.. heres one of them:
Heres my augmented matrix:
I switched Row 1 (R1) with Row 2 (R2)
any from there i can work out x1, x2, x3 etc... but i keep getting reidiculous numbers. And when i check them in the 1st set of equations given, they obviously come out to be wrong.
I.e for this attempt i get
x3 = 517/210
x2 = -2297/1230
x1 = -19.408
What am I doing wrong? Any help is much appreciated