Posted by 50Cent
Doin a bit of maths coureswork, done every question except this 1!
[U]1. The problem statement, all variables and given/known data[/U]
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 :/
[U]2. The attempt at a solution[/U]
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
Thanks
50
Posted by 50Cent
Nevermind, worked out my mistake
Solved it
Posted by arien617
Is this A Level, or Uni work?
Posted by 50Cent
well it was covered in a level, at uni now tho...
quite a simple problem in the scheme of things, but i kept makin silly little mistakes!