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[不等式] 函数不等式

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guanmo1 posted 2013-10-8 15:53 |Read mode
这是辽宁卷2012年文科第21题第(2)问,感觉答案的放缩不自然,有没有其它办法,甚至是“暴力”解法?
导数不等式.png

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kuing posted 2013-10-8 15:59
参考《数学空间》2012年第3期总第10期P27《2012 年辽宁高考理科数学第 21 题的解法分析》

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original poster guanmo1 posted 2013-10-8 16:10
那题好像比这题简单,不太一样吧。

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kuing posted 2013-10-8 16:19
回复 3# guanmo1

换个元就完全一样了好吧……

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original poster guanmo1 posted 2013-10-8 16:44
哦,是的,我只是看到标题是理科,没注意,谢谢了啊!

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