Need help on matrices?

What are matrices?

These lessons on matrices include: what are matrices, operations on matrices, determinants and
inverses of matrices, using matrices to solve systems of equations, Gauss-Jordan Method,
Row Reducing Method, Matrix Row Transformation, Cramer’s Rule and using determinants to find the area of shapes.

Matrices (singular: *matrix*, plural: *matrices*) have many uses in real life. One application
would be to use matrices to represent a large amount of data in a concise manner so that
we can process the data in various ways more conveniently.

For example, the sales of different types of pre-packed food from 3 stalls during a given period of time could be shown in the form of a table here:

Stall A | Stall B | Stall C | |

Packs of noodles sold | 36 | 21 | 43 |

Packs of rice sold | 27 | 56 | 35 |

This table can be represented as a matrix:

This matrix could then be added with another that represents the sales for a different period of time to get the total for the two periods of time, etc.

(include introductory as well as more advanced materials.)

- Add & Subtract Matrices
- Multiply Matrices
- Determinant of a Matrix
- Inverse of a Matrix
- Solve Systems of Equation using Matrix Inverse
- Solve Systems of Equation using Row Transformations
- Solve Systems of Equation using Cramer's Rule
- Find Area using Determinants

**Matrices Calculator with step-by-step solutions**

Introduction to Matrices, Complex Numbers,

Matrices, Systems of Linear Equations,

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