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[数列] 2016浙江理科数学 20 题

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踏歌而来 posted 2016-11-2 22:14 |Read mode
2016高考数学(浙江省最后一道题).PNG

这道题,是否有问题?比如取a1=3/2,a2=9/4,满足题设条件,但 9/4并不小于等于2呀。

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kuing posted 2016-11-2 23:28
还要顾及后边的数啊,你取了 a2=9/4 之后,后面就肯定会有 |a_n|>(3/2)^n 的时候

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original poster 踏歌而来 posted 2016-11-15 09:50
请教Kuing,是否有含有3/2又满足条件的数列呢?如果有的话,请给出一个数列。

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isee posted 2016-11-15 14:46
后续可全部零,可

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色k posted 2016-11-15 14:53
请教Kuing,是否有含有3/2又满足条件的数列呢?如果有的话,请给出一个数列。 ...
踏歌而来 发表于 2016-11-15 09:50
整个数列都是3/2都可以

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