All zero row in linear algebra

Click For Summary
SUMMARY

The discussion centers on the interpretation of an augmented matrix in linear algebra, specifically the matrix with rows indicating that x2 and x3 are both zero while x1 remains arbitrary. This means that x1 can take any real number value, leading to an infinite number of solutions for the system. The conclusion is that the presence of a zero row in the matrix indicates a degree of freedom for x1, confirming the system's infinite solution set.

PREREQUISITES
  • Understanding of augmented matrices in linear algebra
  • Knowledge of basic concepts of linear equations
  • Familiarity with the concept of free variables
  • Ability to interpret row echelon form
NEXT STEPS
  • Study the implications of free variables in linear systems
  • Learn about row echelon form and reduced row echelon form
  • Explore the concept of solution sets in linear algebra
  • Investigate the geometric interpretation of linear equations
USEFUL FOR

Students of linear algebra, educators teaching matrix theory, and anyone interested in solving systems of linear equations.

EV33
Messages
192
Reaction score
0

Homework Statement


Say you had an augmented matrix

0 1 0 0
0 0 1 0
0 0 0 0

You would get...

x2=0
x3=0
x1= arbitrary?

What exactly is meant by arbitrary?
Does this mean that x1 could be anything?

and if so does that mean that the system has an infinite amount of solutions because x1 can be an infinite amound of numbers?


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
There are no equations x1 has to satisfy. Yes, x1 equals anything. And sure, that means you have an infinite number of (x1,x2,x3) values that work.
 

Similar threads

Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 24 ·
Replies
24
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K