已知函数
.
(1)求函数
的单调增区间;
(2)若
是方程
的两个不同的实数解,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87db5ca3e18b18b813e00a7221d39580.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f15c88945a9a3ea4cb023949ae04d6c.png)
2018高三下·全国·专题练习 查看更多[1]
(已下线)《考前20天终极攻略》5月19日 导数与其他知识的综合问题(解答题)【理科】
更新时间:2018-06-05 21:09:46
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88f31ca15cd23ec8ba8661f835a63d8.png)
(1)当
时,
取得极小值
;当
时,
取得极大值22,求
的值;
(2)讨论
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88f31ca15cd23ec8ba8661f835a63d8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e22e1223baf7cb3d53e668c2449609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bb99e2251df1777c5288d603170bd2.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】函数
.
(I)当
时,求函数
的单调区间;
(II)若
是
的极大值点.
(i)当
时,求
的取值范围;
(ii)当
为定值时,设
是
的3个极值点,问:是否存在实数
,可找到
使得
的某种排列成等差数列?若存在,求出所有的
的值及相应的
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb2452433b5980b4aab9b4889d86f3b.png)
(I)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbc93063a58dc46a4afb1a786e4a266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(II)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
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【推荐3】已知函数
.
(1)求
的极值;
(2)若不等式
对任意
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2ad85aaffa4267fcfbeb311e9d7479.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b54931e9ac08ec15f697f710423965a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
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解题方法
【推荐1】已知函数
,
.
(1)当
时,不等式
成立,求整数m的最大值.
(2)证明:当
时,
.
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ccc3175627b96c7d7b4c1f1dd786f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddacc1f5d03e075ff77c3e059775023.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e59703be42898c4aa7addcbd76a0bb.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab42740d8f095b5f7825d14c4c312096.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25522700e456c259978a6d762e818572.png)
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【推荐2】已知函数
,
.
(1)比较
与
的大小;
(2)设方程
有两个实根
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6165422079714d726fc5e81632c4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd15c3876221988032ae37fc79a2e3c2.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)设方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2aabc96b7433bba077ceac76d8f0d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e6c90e91a4e6316e1a111719c16e8e.png)
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