MathPHP\LinearAlgebra\VectorOperationsTest::dataProviderForAdd PHP Method

    public function dataProviderForAdd()
    {
        return [[[], [], []], [[1], [2], [3]], [[1, 2, 3], [1, 2, 3], [2, 4, 6]], [[1, 2, 3], [-2, -2, -4], [-1, 0, -1]]];
    }