AlgebraicUnitQ[a] 如果 a 为代数单位则返回 True，否则返回 False.
检验 是否是一个代数单位：
AlgebraicIntegerQ AlgebraicNumberDenominator RootOfUnityQ AlgebraicNumber MinimalPolynomial RootReduce Algebraics
400+ new features, including the new Wolfram Predictive Interface, social network analysis, enterprise CDF deployment, and more »
