How to get the determinant of a matrix in Julia

Overview

In this shot, we'll learn how to get the determinant of a matrix using Julia. The determinant of a matrix is the scalar value computed for a given square matrix.

We can get the determinant of a matrix in Julia using the function det() provided by the LinearAlgebra package.

Syntax

det(matrix)

Parameter and return value

The det() function takes a matrix as a parameter and returns its scalar value.

Let us take a look at an example of this.

Example

using LinearAlgebra
#given matrix
A = [1 -1; 0 2]
#get determinant of matrix
display(det(A))

Explanation

In the code snippet above:

  • In line 1 we import the LinerAlgebra package to use the det() function.
  • In line 4 we declare and initialize a matrix A.
  • In line 7 we get the determinant of the matrix A using the det() function and display the resultant scalar value.

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