Solve this tricky Column Matrix equation

In summary, a column matrix equation is an equation that involves a rectangular array of numbers or variables arranged in a single column. It typically consists of a matrix and a vector, and can be solved using methods such as Gaussian elimination, matrix inversion, or Cramer's rule. These equations have various applications in science and engineering, and can have multiple solutions or special cases such as inconsistent or dependent equations.
  • #1
aeronautical
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Homework Statement


Solve the matrix equation:

[10 1 9
1 4 3
2 -1 3] X = 3X

where X is a column matrix. Please show all the steps, thanks.

The Attempt at a Solution



I think the solution is X = kU, where k is any constant and U is the vector...
yet not really sure how to do this...can somebody show me all the steps?
 
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  • #2
Hint: Let A be the matrix. Then you want to solve Ax = 3x. This is equivalent to (A-3I)x = 0, where I is the identity matrix. Write it in this form and it will be easier to see a solution.
 

1. What is a column matrix equation?

A column matrix equation is an equation that involves a column matrix, which is a rectangular array of numbers or variables arranged in a single column. The equation typically consists of a matrix on one side and a vector on the other, and the goal is to find the values of the variables that satisfy the equation.

2. How do you solve a column matrix equation?

To solve a column matrix equation, you can use various methods such as Gaussian elimination, matrix inversion, or Cramer's rule. These methods involve manipulating the matrix and vector to simplify the equation and ultimately find the values of the variables that satisfy the equation.

3. What are the applications of column matrix equations?

Column matrix equations have various applications in science and engineering, particularly in fields such as physics, economics, and computer graphics. They are used to model and solve real-world problems involving systems of linear equations, such as determining the flow of electricity in a network or predicting stock prices.

4. Can a column matrix equation have multiple solutions?

Yes, a column matrix equation can have multiple solutions. This means that there can be more than one set of values for the variables that satisfy the equation. In some cases, there may even be an infinite number of solutions, depending on the matrix and vector involved.

5. Are there any special cases in solving column matrix equations?

Yes, there are a few special cases that may arise when solving column matrix equations. These include inconsistent equations, where no set of values for the variables can satisfy the equation, and dependent equations, where the equation is a multiple of another equation and does not provide any new information. These cases require different approaches to solve the equation.

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