public static void FindNthRootTest_Number_Degree_Precision_ArgumentOutOfRangeException(double number, int degree, double precision, double expected)
 => Assert.Throws <ArgumentOutOfRangeException>(() => Newton.FindNthRoot(number, degree, precision));
 public static void FindNthRootTest(double number, int degree, double eps, double expected)
 {
     Assert.AreEqual(expected, Newton.FindNthRoot(number, degree, eps), eps);
 }