MathPHP\LinearAlgebra\MatrixDecompositionsTest::testRREFAlreadyComputed PHP Method

    public function testRREFAlreadyComputed()
    {
        $A = new Matrix([[1, 2, 3], [2, 3, 4], [3, 4, 5]]);
        $rref1 = $A->rref();
        // computes rref
        $rref2 = $A->rref();
        // simply gets already-computed rref
        $this->assertEquals($rref1, $rref2);
    }