lettura simple

How to make a matrix in geogebra

In this online lesson I'll explain how to create a square and rectangular matrix on Geogebra.

How to make a square matrix

In this example you will realize a simple 2x2 square matrix with two rows and two columns.

Type {{1,2}, {3,4}} using curly brackets.

how to make a matrix in Geogebra

The outermost curly brackets enclose the rows of the matrix separated from each other by commas.

Now hit enter.

a matrix example in Geogebra

Geogebra automatically assigns an identifier to the matrix. For example, m1.

How to give the matrix another name? If you want to give the matrix a precise name, write the identifier and the equal symbol before the matrix. For example, name = {{1,2}, {3,4}}. In this way Geogebra assigns the matrix to the identifier you just wrote.

How to make a rectangular matrix

You can also make a rectangular matrix. For example a 3x2 matrix.

In this case the matrix is made up of 3 rows and two columns.

Write {{1,2}, {3,4}, {5,6}} on Geogebra and press enter.

how to make a rectangular matrix in Geogebra

Geogebra shows you the matrix with the elements you have entered.

an example of rectangular matrix in Geogebra

After creating a matrix, you can use it to do any matrix calculation operations.

For example, you can add two matrices, calculate the determinant of a square matrix, make the row-column product between two matrices, calculate the inverse matrix, the transposed matrix, the rank, etc.

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