public function testInverse(array $A, array $A⁻¹)
{
$A = MatrixFactory::create($A);
$A⁻¹ = MatrixFactory::create($A⁻¹);
$this->assertEquals($A⁻¹, $A->inverse(), '', 0.001);
// Test calculation
$this->assertEquals($A⁻¹, $A->inverse(), '', 0.001);
// Test class attribute
}