public function testMultiplyScalar() { $matrix = new Matrix([[4, 2, 6], [1, 7, 3], [7, 3, 2]]); $multiplied = $matrix->multiplyScalar(2); static::assertEquals(8, $multiplied->get(0, 0)); static::assertEquals(4, $multiplied->get(0, 1)); static::assertEquals(12, $multiplied->get(0, 2)); static::assertEquals(2, $multiplied->get(1, 0)); static::assertEquals(14, $multiplied->get(1, 1)); static::assertEquals(6, $multiplied->get(1, 2)); static::assertEquals(14, $multiplied->get(2, 0)); static::assertEquals(6, $multiplied->get(2, 1)); static::assertEquals(4, $multiplied->get(2, 2)); }