Posted by mike on Friday, December 18, 2009 at 6:40am.
This does not make sense to me. You have three equations, three unknowns. YOu can solve for x,y,z. Whatever you are doing, I don't understand.
What am I doing wrong I am using the Gauss Jordan method to calculate this answer and some other students are coming up with differant answers.
Problem is
3x+y+z=5,
x+5y-z=-8,
10x+7y+z=2
Answers are
1-(-6z+3/11, 7z-4/11,z)
2-(-6z+33/11,7z-44/11)
I got #1 for my answer and some got #2 which one is right. Some got all kinds of numbers.
well, I didn't get anything like that, I got a specific number solution for x, y, and z.
When you say "calculate" and answer, that to me implies looking for a specific solution.
Here is a Gauss Jordan applet, check your work
http://www.gregthatcher.com/Mathematics/GaussJordan.aspx
My mistake New at this Question should be Use the Gauss-Jordn method to solve the system of equations.
well, both your 1) and 2) are NOT solutions. Solutions have specific values for x,y, and z.