Register to reply

Gaussian Elimination

by psychfan29
Tags: elimination, gaussian
Share this thread:
psychfan29
#1
Apr20-08, 05:03 PM
P: 9
Solve the following system of equations using Gaussian elimination:
3w+10x-2y+3z=55
w+12x-11y-z= 69
-3w-6x-5y-10z=-47
-3w+9x+5y+4z=-1

Here's what I did so far:
swap R1 and R2 (row 1 and row 2)
-3R1+R2 (multiply row 1 by -3 and add row 2 to that product)
3R1+R3
3R1+R4

Now, after that I think I may have made a mistake because I eventually get some very odd fractions that could not possibly be correct. Can somebody tell me what the steps are???
Phys.Org News Partner Science news on Phys.org
Study links polar vortex chills to melting sea ice
Lab unveil new nano-sized synthetic scaffolding technique
Cool calculations for cold atoms: New theory of universal three-body encounters
exk
#2
Apr20-08, 09:13 PM
P: 119
I followed your initial steps and finishing the elimination works out just fine despite any fractions. Make sure your arithmetic is correct and don't be afraid of fractions.


Register to reply

Related Discussions
Gaussian Elimination Precalculus Mathematics Homework 6
Help with Gaussian Elimination Introductory Physics Homework 1
Gaussian elimination Introductory Physics Homework 3
Gaussian Elimination Introductory Physics Homework 3
Gaussian elimination Introductory Physics Homework 3