已知函数
.
(1)求曲线
在点
处的切线方程和函数
的极值;
(2)若对任意的
,都有
成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10681ce4d8d4149898debf5dac7ac826.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c3d56ad65950f7e9353f1a63b0302c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ff3dc2c8ff8c85033f84dee00b4bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2017-05-03 10:50:12
|
相似题推荐
解答题-证明题
|
困难
(0.15)
名校
【推荐1】已知函数
,
.
(1)当
,
时,求函数
在
处的切线方程,并求函数
的最大值;
(2)若函数
的两个零点分别为
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751effb49fba60820d667c314557a336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba39eea466242abb659ede4644623a4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce4430b8b9b0c78de693513a7f88915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adf91c01c71319391c3e5439cd77396.png)
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解答题-证明题
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解题方法
【推荐2】已知
,函数
,
.
(1)求曲线
在点
处的切线方程;
(2)证明:
存在唯一的极值点;
(3)若存在
,使得
对任意
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ca7268ec2c0a1f8fc34a45b5f97cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d1fc6f50bf6d0b1504092ac98c5597.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ebcdbf5fd576e70e160e38e663f690.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b60687b8d8b79e40eae1501fbfb909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d1fc6f50bf6d0b1504092ac98c5597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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解答题-证明题
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解题方法
【推荐1】已知函数
.
(1)若曲线
在点
处的切线与直线
垂直,求该切线方程;
(2)若
是
的一个极值,求满足此条件的实数
的值;
(3)若
是方程
的两个不相等的实数根,求证:
.
(注:
是
的导函数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae6f7531d12153cfc4da391e613971c.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f84134092f31767ff9f7e8200a79fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22581bc1395203df37e56ee115e14de2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e815aee0e765e618a519eb59bfba32a1.png)
(注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ddf4520633c436944ba235ed7c951e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e75adc498833495b79af8cfbaf306f6.png)
(1)当
时,
①求曲线
的单调区间和极值;
②求曲线
在点
处的切线方程;
(2)若函数
有两个不同的零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ddf4520633c436944ba235ed7c951e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e75adc498833495b79af8cfbaf306f6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
②求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606e5694c2f33033cced4e29d3152c16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
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困难
(0.15)
名校
解题方法
【推荐3】设
,
,
.
(1)求函数
,
的单调区间和极值;
(2)若关于x不等式
在区间
上恒成立,求实数a的值;
(3)若存在直线
,其与曲线
和
共有3个不同交点
,
,
(
),求证:
成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699f767ccf837c2bf8019d03451849c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c2d4affa0741e2f2582dc8e957685.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1128ef28912ba41f037afea504d6bc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ebc97d255d9f92969a741955da4ec6.png)
(2)若关于x不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a3713bb22838d9432c9e484c537e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(3)若存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a28b3589f39573e9cc7d6684a033f24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd5552324550304765749352051d850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8828dad2747f16ae4efee1ac0344a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328071ace61d03885e3bc122b2713ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830c98ceab2c157eac58caaf717b6de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
您最近一年使用:0次
解答题-证明题
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困难
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名校
【推荐1】已知函数
的表达式为
.
(1)当
时,证明
;
(2)当
时,讨论函数
的单调性;
(3)若
对
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57492d00c217459f868e23a6eeffa242.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2259e91a333ecf7900f6289f1fc22759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐2】已知函数
,
.
(1)求曲线
在点
处的切线方程.
(2)已知关于
的方程
恰有4个不同的实数根
,其中
,
.
(i)求
的取值范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6233814cb71490dee2b31b2ed87225a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1146b920e21e9b2bf1bb5df6afe7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6270bb08b90f72d5671ab8225f356c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fe3251e054fe97089806ba7033f802.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574824d85f44d42246529ac135c0391c.png)
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解答题-问答题
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困难
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【推荐3】已知函数
.
(1)试讨论函数
的单调性;
(2)对任意
,满足
的图象与直线
恒有且仅有一个公共点,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70229004516af27f6367a177241e3a89.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70229004516af27f6367a177241e3a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐1】已知函数
,其中
.
(1)若
,求函数
在
处的切线方程;
(2)当
时,
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba513a1bf1e07ac85c90fd5fb6ee404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e92e03c27a9632b5b24360a4bdcb295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c63e1c64c42b7f3b7fdc396d4756cab.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5791e3050af8940d9376dcef24fbcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b4d04800acca6ef5a8696befee0ece.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐2】已知函数
,
(1)求函数
的单调区间;
(2)当
时,判断函数
,(
)有几个零点,并证明你的结论;
(3)设函数
,若函数
在
为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff70f85e919eda80c7599da089fbfb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f8bc4588ebf94cc5aef07d7ae3b334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c5c8c76c036737c130801a52f2898d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55a9d20b96c244f0275e7d6fe796b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9eca1510647f9b40cf7ce69c3757f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次