一道英语数列数学题1、If A1、A2 A3.An.is a sequence such that A1=-2 and An+1 is the reciprocal of the sequence of An for all n≥1,what is the value of A4?答案是1/256,

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一道英语数列数学题1、If A1、A2 A3.An.is a sequence such that A1=-2 and An+1 is the reciprocal of the sequence of An for all n≥1,what is the value of A4?答案是1/256,
一道英语数列数学题
1、If A1、A2 A3.An.is a sequence such that A1=-2 and An+1 is the reciprocal of the sequence of An for all n≥1,what is the value of A4?
答案是1/256,

一道英语数列数学题1、If A1、A2 A3.An.is a sequence such that A1=-2 and An+1 is the reciprocal of the sequence of An for all n≥1,what is the value of A4?答案是1/256,
怎么可能,题目说所有A(n+1)是An的倒数,所以A4=1/A3=A2=1/A1,答案是-1/2

应该是答案错了,现在也有好多答案是错的。

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