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[数列] 请教一数列题

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25717246 posted 2017-7-28 11:46 |Read mode
Last edited by 25717246 2017-7-28 12:05已知数列$\{a_n\}$是等差数列,$a_1^2+{a_{100}}^2\le10$,则$a_{100}+a_{101}+\cdots+a_{199}$的最大值是

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kuing posted 2017-7-28 12:15
见《撸题集》第 768 页题目 5.5.11.

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original poster 25717246 posted 2017-7-28 12:20
好的,谢谢!

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isee posted 2017-7-28 13:17
见《撸题集》第 768 页题目 5.5.11.
kuing 发表于 2017-7-28 12:15
注:这题偶尔会出现,不然就……

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kuing posted 2017-7-28 13:29
回复 4# isee

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original poster 25717246 posted 2017-7-29 12:30
柯西用得太风骚

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