How to find unknown values in a matrix?

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In summary, a matrix is a rectangular array of numbers, symbols, or expressions used to represent and solve systems of linear equations. Unknown values in a matrix are variables representing the unknown quantities in the system. To find these values, you can use methods such as Gauss-Jordan elimination, Cramer's rule, or matrix inversion. Calculators and online resources are also available for solving matrices and finding unknown values.
  • #1
red1312
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Homework Statement


how to find this
ELI2K5K.png


Homework Equations


none

The Attempt at a Solution


determinant??
 
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  • #2
red1312 said:

Homework Statement


how to find this
ELI2K5K.png


Homework Equations


none

The Attempt at a Solution


determinant??
Yes, expand the determinant. That should give you an equation that may let you solve for combinations of x and y that satisfy the equation... :smile:
 
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  • #3
berkeman said:
Yes, expand the determinant. That should give you an equation that may let you solve for combinations of x and y that satisfy the equation... :smile:
thanks :)
 
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What is a matrix?

A matrix is a rectangular array of numbers, symbols, or expressions arranged in rows and columns. It is commonly used in mathematics, science, and engineering to represent and solve systems of linear equations.

What are unknown values in a matrix?

Unknown values in a matrix are variables that have not been assigned a specific numerical value. These variables are typically represented by letters and are used to represent the unknown quantities in a system of linear equations.

How do I find unknown values in a matrix?

To find unknown values in a matrix, you can use various methods such as Gauss-Jordan elimination, Cramer's rule, or matrix inversion. These methods involve manipulating the given matrix and performing operations to solve for the unknown values.

Can I use a calculator to find unknown values in a matrix?

Yes, many scientific and graphing calculators have built-in functions for solving matrices. These calculators allow you to input the matrix and then use the appropriate function to find the unknown values.

Are there any online resources for finding unknown values in a matrix?

Yes, there are several online resources and tools available for solving matrices and finding unknown values. These include websites, software, and apps that offer step-by-step instructions and calculations for various methods of solving matrices.

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