public function dataProviderForLogistic()
{
return [[0, 0, 0, 0, 0], [1, 1, 1, 1, 0.5], [2, 2, 2, 2, 1], [3, 2, 2, 2, 0.238405844044], [3, 4, 2, 2, 0.476811688088], [3, 4, 5, 2, 0.0267714036971], [3, 4, 5, 6, 3.99999877639], [2.1, 3.2, 1.5, 0.6, 0.305118287677]];
}