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[函数] 2012四川高考题(文12)

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lrh2006 posted 2014-8-28 13:27 |Read mode
QQ图片20140828111107.jpg
kuing或者哪位有做过这道题,给个链接吧,谢谢

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kuing posted 2014-8-28 13:34
当年做了理数的,题目是类似的,参见 《数学空间》2012年第2期(总第9期)P22

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乌贼 posted 2014-8-28 13:50
回复 2# kuing
这个头像,想起6、7十年代坏了的电视机,晕眩……

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kuing posted 2014-8-28 13:51
回复 3# 乌贼

就是要这样的效果

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original poster lrh2006 posted 2014-8-28 14:35
回复 2# kuing


   嗯, 好的,谢谢kuing神。

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踏歌而来 posted 2014-8-28 22:02
Last edited by 踏歌而来 2014-8-28 22:27有人说,四川2012理数12题有误:
bbs.eduu.com/thread-1533129-1-1.html

是真的吗?

doc88.com/p-237794359306.html
在这里,怎么得出cos(a1)+cos(a2)+cos(a3)+cos(a4)+cos(a5)=0的呢?

还有人说有最简解法,是吹牛吗?
zhidao.baidu.com/link?url=t4uptDMHRC5NOUnEwQj … Jk6Vldo-01TQMXRoi2aK

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kuing posted 2014-8-28 22:54
回复 6# 踏歌而来

参见 《数学空间》2012年第2期(总第9期)P22

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