Posted by gloria on Saturday, September 10, 2011 at 1:58pm.
There is probably a typo in the second equation. The first equal sign (between x2 and x3) should be a + or a -.
x1+ x2 = X3 = 4
Curiously both corrections using a + or - give integer solutions.
Next, Gauss-Jordan elimination requires the matrix be transformed into a diagonal matrix using elementary row operations. After that, the solution should be evident.
If you are not yet familiar with the method, try reading your textbook, or visit:
http://ceee.rice.edu/Books/CS/chapter2/linear44.html
If you have questions about the method, give it a try and post up to the point where you have a problem or question.
Related Questions
Linear Algebra - Solve the following system using Gauss's algorithm (a) x1...
Math - Which of the following are linear equations in x1, x2 and x3? (a) x1 + ...
Reply to grant about a regression problem - This is a reply to the question ...
Calculus (Urgent!!) - Hello everyone, I need help with the following problems. ...
art - two vectors x1 = (20 m) x and x2 (15 m) x, compute and show graphically (a...
algebra2 - solve the equation: First: x + 3y = 5 Second: 3x - y = 5 should i use...
intro to probability - In a study of particulate pollution in air samples over a...
Calculus - Find the partial derivative y with respect to s for the following ...
college - Which of the following choices is a solution for: (-3-i)x1 + (1-2i)x2...
Linear Algebra - I previously posted this question under the wrong topic. Which ...
For Further Reading
