| public getDeterminant ( ) : float | integer | ||
| Результат | float | integer | |
public function testGetMatrixDeterminant()
{
//http://matrix.reshish.com/determinant.php
$matrix = new Matrix([[3, 3, 3], [4, 2, 1], [5, 6, 7]]);
$this->assertEquals(-3, $matrix->getDeterminant());
$matrix = new Matrix([[1, 2, 3, 3, 2, 1], [1 / 2, 5, 6, 7, 1, 1], [3 / 2, 7 / 2, 2, 0, 6, 8], [1, 8, 10, 1, 2, 2], [1 / 4, 4, 1, 0, 2, 3 / 7], [1, 8, 7, 5, 4, 4 / 5]]);
$this->assertEquals(1116.5035, $matrix->getDeterminant(), '', $delta = 0.0001);
}
