void () { // see http://ru.onlinemschool.com/math/library/matrix/determinant/ assertEquals(33.0, Matrix.create(2, 5, 7, -4, 1).determinant()); assertEquals(97.0, Matrix.create(3, 5, 7, 1, -4, 1, 0, 2, 0, 3).determinant()); assertEquals(6.0, Matrix.create(3, 2, 4, 1, 0, 2, 1, 2, 1, 1).determinant()); assertEquals(0.0, Matrix.create(4, 2, 4, 1, 1, 0, 2, 0, 0, 2, 1, 1, 3, 4, 0, 2, 3).determinant()); }