已知函数
.
(1)若函数
的图象与
轴存在交点,求
的最小值;
(2)若函数
的图象在点
处的切线斜率为
,且函数
的最大值为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af28119716bfcb208da33d4ed168cccd.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7bc43cecf0b90e0e2a0534a33e1eee.png)
更新时间:2016-12-04 17:51:40
|
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解答题-问答题
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名校
解题方法
【推荐1】已知函数
.
(1)当
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的一条切线垂直于
轴,证明:该切线为
轴.
(2)若
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8009bb48b25f496c3e8054b2e3d9961e.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
【推荐2】已知函数
在
处的切线与直线
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(1)求实数
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的单调性;
(2)若方程
有两个不同实根
,且
,求证:
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(1)求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c701c5c07f7c584aadd218d9e341d3ac.png)
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【推荐1】已知
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(1)求
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(1)求
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(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
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【推荐2】函数
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(1)讨论
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;
(3)盒子中有编号为1~100的100个小球(除编号外无区别),有放回的随机抽取20个小球,记抽取的20个小球编号各不相同的概率为p,求证:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec9e1834ec56f84cefda56e368436d.png)
(1)讨论
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9e231b4d65720f9d41e17e09156849.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca64171f1063ddf459dca2376060171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac673d8e3c0980182bc6ff4ef8d9d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b33939e7097602e4e47ebb936667af8.png)
(3)盒子中有编号为1~100的100个小球(除编号外无区别),有放回的随机抽取20个小球,记抽取的20个小球编号各不相同的概率为p,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb48728a0e00d1695b2e5cac24c73aa2.png)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92be82894508d5fd942f8933e736b728.png)
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(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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(2)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0005a3b6f8c70e23e29073266f3ab8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328f0a6531a47e6fd1b954eee0fe48f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知函数
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7d8441bc9165a672f01614a44237c9.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc3666bd0e780d4c96e153446612181.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfe223ffb2891b236e4ba97b049c733.png)
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解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a310691ebccd6e0e32c1512fe65521a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a310691ebccd6e0e32c1512fe65521a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e2ffd643ce88da1dd046b59d6a27f1.png)
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【推荐2】若定义在
上的函数
满足:
的单调区间与
的单调区间完全相同,则称
为“二阶和谐函数”.
(1)求证:
是“二阶和谐函数”;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求证:
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5491a30b301f7e0ce29db9e2c864b9bc.png)
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