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1数列与递推问:数列是函数吗?答:定义在自然数集上的函数,函数式为an=f(n).问:有何实际意义?答:数列的每个函数值,都按自然数序号排了座
1 Series and Recursive Question: Is a series a function? A: A function defined on a natural number set, the function is an=f(n). Q: What is the practical significance? A: Each function value of a series is Natural number serial seats