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解题方法
1 . 设函数
在
内有定义,对于给定的实数
,定义函数
,设函数
,若对任意的
恒有
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2372f424431ce7b547a66b7d61d75421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e91c44d8e3816c0de2f51556b6e9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34767a2cbe51dfd84ffa9ef0095a8f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4eb10694a54696e4295d1887d27005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d1a94ea3c278c2197572cc1b7725b1.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2 . 已知定义在R上的奇函数
,设其导函数为
,当
时,恒有
,令
,则满足
的实数
的取值集合是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33770cd4511e0f50f2d959ffd913e97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842c2ef9893cc67e621e272fa0be9926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01322f5fe80a82e5e84a51e0a6ab000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c07e812a89d33b567fcbc3350449a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1e4023a178872c5c1498dd08fe97ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . 已知函数
(
为实常数).
(1)若
,
,求
的单调区间;
(2)若
,且
,求函数
在
上的最小值及相应的
值;
(3)设
,若存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc41584b9b1dea8288ed938d05a1a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce4430b8b9b0c78de693513a7f88915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77443438a0f4f2a50f73497402175eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfe44972e8bf50ec9d250f298bbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e1b76ce5348de2f813d418f6ca8b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知函数
,常数
.
(Ⅰ)若
,过点
作曲线
的切线
,求
的方程;
(Ⅱ)若曲线
与直线
只有一个交点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a9848f12a2eab18c82c236bba1cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa116f6bbbac1a974976511c5d0b3e7.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec62f2635e41acdbfbe10869b926e4c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a46168038fc09494797568f445d6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9957f52a4f4a424e522d0afb0bbcdabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9957f52a4f4a424e522d0afb0bbcdabb.png)
(Ⅱ)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a46168038fc09494797568f445d6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721a35a70ff17001377390a8e3cef4ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b331bbdd68d110681fc4547748b93bb.png)
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2017-07-23更新
|
506次组卷
|
11卷引用:2016届山东省济南外国语学校高三上开学考试文科数学试卷
2016届山东省济南外国语学校高三上开学考试文科数学试卷2015届吉林省长春市普通高中高三质量监测三文科数学试卷2016届宁夏银川二中高三模拟三文科数学试卷宁夏石嘴山市第三中学2016-2017学年高二下学期期中考试数学(文)试题宁夏银川市第二中学2017届高三下学期数学(文)模拟试题宁夏石嘴山市第三中学2018届高三12月月考数学(理)试题【全国百强校】浙江省绍兴市第一中学2018-2019学年高二下学期期中考试数学试题(已下线)专题19+选修1-1综合练习-2020-2021学年【补习教材·寒假作业】高二数学(文)(人教A版)(已下线)专题16+选择性必修第二册综合练习-2020-2021学年【补习教材·寒假作业】高二数学(人教A版2019)(已下线)专题08 一元函数的导数及其应用综合练习-2020-2021学年高二数学单元复习(人教A版选择性必修第二册)(已下线)专题19 选修1-1综合练习
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5 . 已知函数g(x)=(2﹣a)lnx,h(x)=lnx+ax2(a∈R),令f(x)=g(x)+h′(x),其中h′(x)是函数h(x)的导函数.
(Ⅰ)当a=0时,求f(x)的极值;
(Ⅱ)当﹣8<a<﹣2时,若存在x1,x2∈[1,3],使得|f(x1)﹣f(x2)|>(m+ln3)a﹣2ln3
ln(﹣a) 恒成立,求m的取值范围.
.
(Ⅰ)当a=0时,求f(x)的极值;
(Ⅱ)当﹣8<a<﹣2时,若存在x1,x2∈[1,3],使得|f(x1)﹣f(x2)|>(m+ln3)a﹣2ln3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2e1042ca0ec43136d5132785d048f0.png)
.
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2017-02-16更新
|
537次组卷
|
3卷引用:2017届山东肥城市高三上学期升级统测数学(理)试卷
6 . 已知函数
,
.
(Ⅰ)当
时,求曲线
在点
处的切线方程;
(Ⅱ)当
时,试讨论函数
的单调性;
(Ⅲ)设斜率为
的直线与函数
的图象交于两点
(
),证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecb7aec222776d1ad9e6bbcad9d1508.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80cf0f8829ad6ed064ba129545b2d3a2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(Ⅲ)设斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5300f2d0cdf34de189a6be1b518891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efb3a6199e978853a28813e33cbbecc.png)
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2016-12-04更新
|
679次组卷
|
2卷引用:2017届山东潍坊中学高三上学期开学考数学(文)试卷
7 . 设函数
.
(1)求函数
的单调区间和极值;
(2)当
时,若函数
在区间
上存在唯一零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4700cba0f3d77596334144cc0182b21.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187d8df1f4c4673d12c1d0608534de23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2016-12-04更新
|
400次组卷
|
2卷引用:2017届山东潍坊中学高三上学期开学考数学(文)试卷
8 . 已知函数
,若曲线
在点
处的切线与直线
垂直.
(1)求
的值;
(2)函数
恰有两个零点
,求函数
的单调区间及实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b141cc029d1baa1fc895760188449c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f1876598dced0b2c136bb07defb87c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10eb5358d094a248f26c44c875fad0e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb59a85c4b3f4fca0f71fd01cb5f142e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ac24bac46e33412478cf3fd5e94f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 已知函数
和直线
.
(1)当曲线
在点
处的切线与直线
垂直时,求原点
到直线
的距离;
(2)若对于任意的
恒成立,求
的取值范围;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3a1a500bbe88855c56e67c6d30eb5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4859de59a234a2048933845e5b4b73b4.png)
(1)当曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119bf73554548ae7cd71b04fc14232b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43663cb8bd6e43585646b9e0df65e79b.png)
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2016-12-04更新
|
335次组卷
|
2卷引用:2016届山东省潍坊一中高三下学期起初考试理科数学试卷
10 . 定义
是
的导函数
的导函数,若方程
有实数解
,则称点
,
为函数
的“拐点”.可以证明,任意三次函数
都有“拐点”和对称中心,且“拐点”就是其对称中心,请你根据这一结论判断下列命题:
①存在有两个及两个以上对称中心的三次函数;
②函数
的对称中心也是函数
的一个对称中心;
③存在三次函数
,方程
有实数解
,且点
为函数
的对称中心;
④若函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac322fc4206da717226ad89530effdd5.png)
.
其中正确命题的序号为_______ (把所有正确命题的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b589732202941f828016f982c92996b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60a6d986c80039124c8a869b0e481af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
①存在有两个及两个以上对称中心的三次函数;
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c087948f0abff7f6b3218860c973f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efc139f70df469a51f530e03c98abaa.png)
③存在三次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a42dfca9f27abe558892fc0b7db96df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb0c68f6e69ab9da3ea2c8c2f48f683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed0aa12ed308e80e35f1bb6101d36d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b8df99b8a0839cba0eb04427c0a1b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac322fc4206da717226ad89530effdd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb688d1f5aa60c67b53486b84f0aa432.png)
其中正确命题的序号为
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