解题方法
1 . 已知函数
,
,
.
(Ⅰ)讨论
的单调性;
(Ⅱ)若
的最大值为
,
存在最小值
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b293ba9c4fcffc09bae870441e442fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc61f22d4852d7d0831b991f6d3556e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65cc39d12bb5794931b8bdcda3265ca.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6208895c0e3f31fcc437d2dfc5d18b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba00d1e252590c651fa39df7b00adf9.png)
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2016-12-04更新
|
1437次组卷
|
2卷引用:2016年内蒙古包头市高三学业水平测试与评估(二)数学理试卷
2 . 已知函数
,
.
(1)当
时,求函数
在
处的切线方程;
(2)令
,讨论函数
的零点的个数;
(3)若
,正实数
满足
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91da1db379dafbd535abce16fff2446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ddae50735a358964e2aff58cf28867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edc9a8dca8cf050887b4915bfc962f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6330de640d51bb3970813289a4de3a5d.png)
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名校
3 . 已知函数
.
(1)求函数
的图象在点
处的切线方程;
(2)当
时,求证:
;
(3)若
对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649596be363632149d08396a9a80e8cd.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0537af587b482ab6eea06ee944ae56f3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085f3f7051d969af530a058862f678a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2017-03-27更新
|
1211次组卷
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3卷引用:2017年内蒙古呼和浩特市高三年级质量普查调研考试(一模)文数试卷
4 . 已知函数
.
(1)若
,求证:
;
(2)若
,
,求
的最大值;
(3)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc651273ad842b071481556bf2e686f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dddc44a0e21df132286d426f0abd4ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53712a4b42a1b8d6ae432649f554fcd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f3118c69bfa54eebf1c284f20fab4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4b12531ae5db14ebad083980805ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38f0c7a9ecee291e4c89752e2338cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9212a8d6a099d4b36bd9d954ae9045.png)
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2016-12-04更新
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2卷引用:内蒙古鄂尔多斯市第一中学2019-2020学年高三第四次调研考试数学(理)试题
5 . 设
.
(1)求
的单调区间;
(2)已知
,若对所有
,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581bdb6d280a4364a376971b3a8b3839.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6804d95ea14b2540cd1ac5698043b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0879734ee766cb630cfeb3f25fea7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2014·河北邯郸·二模
名校
6 . 已知函数
,曲线
经过点
,且在点
处的切线为
.
(1)求
的值;
(2)若存在实数
,使得
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc27c83b36c3bef7dbd1ef9466b22cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22840186db0afc0e2b2e8915ce79b998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6134a70ad5fd38fb2d52c6bdb2b34e91.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a11b8a2fc710d26c89953d4d3a4eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91de80e5bd853f0ec4da6c616fdc1918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2016-12-03更新
|
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|
5卷引用:内蒙古杭锦后旗奋斗中学2018届高三上学期第二次月考数学(文)试题
名校
解题方法
7 . 已知函数
(
是自然对数的底数,
).
(1)求函数
的单调递增区间;
(2)若
为整数,
,且当
时,
恒成立,其中
为
的导函数,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7054dbcd9ad1998688f13392344cc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d347d5b8729ddc0417eb8eb0a13c7218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2016-12-03更新
|
497次组卷
|
3卷引用:内蒙古赤峰市2016-2017学年高二下学期期末考试数学(理)试题
8 . 已知函数
.
(1)证明:
存在唯一的极值点;
(2)证明:函数
有且仅有两个异号的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4283c448f4dc8316e98e7c75cc1dca9.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
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