名校
解题方法
1 . 对于函数
,如果其图象上存在不同的两点
,
,
,使得这两点处的切线重合,那么我们称函数
存在“双切点切线”.已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5eb25153f05e68b3368495d2b0a4747.png)
(1)已知函数
的一条“双切点切线”的斜率等于1,切点
、
的横坐标
,求实数
的值;
(2)如果函数
存在“双切点切线”,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b5f32c09caa0be0d4c33be07aa4530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5eb25153f05e68b3368495d2b0a4747.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7b0c34c4a6e7be6f08ef7b7829c4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
(
且
).
(1)若函数
在其定义域
内既有极大值也有极小值,其中
为
的导函数,求实数
的取值范围;
(2)当
时,函数
,其中
,若
,
为
的导函数,函数
的极小值点为
,试比较
,
的大小,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4db012cdcf323709778a7b2e317be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d77f276606873be59ec132dbe9878e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e64ba8593537d13752713ecc882cd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15bccf9756ec716bd5c04e2641b6441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19d2c73835394d969fe770e7669f954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ebb47822bbdb5db7d3b803ea4344a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba762c563a93c8186ac14e4a996d278a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d22bb946774b45d4671e5eabe3b47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d22bb946774b45d4671e5eabe3b47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
您最近一年使用:0次
2021·全国·模拟预测
3 . 已知
,
(
且
),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d76ee3b131ecd6aa1aacf7fb7b3eb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84518e68c9e73dee93a8a3cafce4d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.若![]() ![]() |
D.若方程![]() ![]() ![]() |
您最近一年使用:0次
解题方法
4 . 已知函数
,其中
.求证:
(1)
,且
;
(2)
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4d6363133c710c00b99fafa01dce16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1948bdb9bfc6493bc0e596d9a0dab5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accad8245514b083d7434160085188fd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9f295a43c5d78cf9518456fef0abda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32474ff2d16bb427dc7426e481b20709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2479b7fa52eafe0e011435864bfe9c37.png)
您最近一年使用:0次
解题方法
5 . 已知函数
的最小值为0,
为自然对数的底数,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e610461dca02ae65e29cad237f553eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
解题方法
6 . 下列选项中,正确的是( )
A.函数![]() ![]() ![]() ![]() |
B.若不等式![]() ![]() ![]() |
C.已知![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2021-09-17更新
|
765次组卷
|
4卷引用:江苏省部分学校(南京市第三高级中学等)2021-2022学年高三上学期第一次质量评估数学试题
7 . 如图,某森林公园由半径为4千米的扇形区域ABD和三角形区域DBC组成,
,
,
.现甲、乙两名森林防火巡视员(分别视为两点M、N)同时从A地出发沿环公园路线巡视森林,终点均为C地,甲的路线是
,其中AB段速度为2
,BC段速度为1
,乙的路线是
,其中AD段速度为
,DC段速度为v
.
![](https://img.xkw.com/dksih/QBM/2021/5/24/2727841421860864/2760610361819136/STEM/a1734351-a509-403a-8df0-f19f842def9a.png?resizew=269)
(1)若甲、乙两管理员到达C地的时间相差不超过30分钟,求v的取值范围;
(2)若
,
为t小时后甲乙巡视过的森林公园的面积(即线段MN扫过的面积),
①求
的表达式
;
②用
表示平均巡视效率,求
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b63315b6f36ac42df9d667b58f50c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aed83bca76027108bea2c38b0a78665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11cd77cc18e758213948eef56409709f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0cc6293cfedec30b124ece908c4c438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd9242efa2facde4d7c79ff0c1b00ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd9242efa2facde4d7c79ff0c1b00ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcc497b16c43b39596b64d77c969771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2582da0c46646080b5a44d0efb2b7c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd9242efa2facde4d7c79ff0c1b00ea.png)
![](https://img.xkw.com/dksih/QBM/2021/5/24/2727841421860864/2760610361819136/STEM/a1734351-a509-403a-8df0-f19f842def9a.png?resizew=269)
(1)若甲、乙两管理员到达C地的时间相差不超过30分钟,求v的取值范围;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02eacd25f4aab06ed82d0315291c2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5451a66fb4f48811e042d8ca250f51.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5451a66fb4f48811e042d8ca250f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9a21e5a23421852609c38d71e2d591.png)
②用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1abfb04e3ea7150e53eef10ea1b117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6892f23bcdddfda0f24b6063680f39.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
,
为
的导函数.
(1)证明:当
时,函数
在区间
内存在唯一的极值点
,且
;
(2)若
在
上单调递减,求实数
的取值范围.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81894c7f92af1cac020a4172c8911287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fefd1d1687c2274b0544028573413d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fac8237d2038f0758be704b2ef4087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d126b5824164e145c4764ad0b79396a8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3cee5e50ee4f1dfbcf0ff0312fef1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44db6e470168bf9ebed4494ccc593e5.png)
您最近一年使用:0次
2021·全国·模拟预测
名校
9 . 已知函数
在
处取得极值
为
的导数.
(1)若
,讨论
的单调性;
(2)若
,
的取值集合是
,求
中的最大整数值与最小整数值.
(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301f7f981f729db1f3cd33184b4e43f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957efc0fc2339c854c779ed05a0b62be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d590944b8963e2070e61b429e772d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0873d358fbfed1efa0637431f3805614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316159846556eb11d48406ba98b984db.png)
您最近一年使用:0次
2021-05-18更新
|
1788次组卷
|
8卷引用:2021年高考最后一卷理科数学(第八模拟)
(已下线)2021年高考最后一卷理科数学(第八模拟)(已下线)2021新高考高考最后一卷数学第二模拟湖南省长沙市长郡中学2021届高三下学期考前冲刺卷数学试题(已下线)考点11 导数与函数的单调性-备战2022年高考数学典型试题解读与变式浙江省绍兴市第一中学2021-2022学年高三上学期期末数学试题河北省衡水中学2022届高三下学期素养提升五数学试题河南省南阳市第一中学校2022-2023学年高三上学期第一次月考数学(理)试题山西省长治市第二中学校2023届高三上学期第四次月考数学试题
10 . 已知函数
,
(
为自然对数的底数),
.
(Ⅰ)若
,求函数
的单调区间;
(Ⅱ)若
恒成立,求实数
的值;
(Ⅲ)若直线
是曲线
的一条切线.求证:对任意实数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad406e22502cf97b27d51bb87258622c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ec6ad1c734902409ff399e95525388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be812216ebb70fdf53eb519d22a6690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a36ede780090698d1dcb4b136a90193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅲ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad406e22502cf97b27d51bb87258622c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f63d0559956db2f2519dd0b23112b4.png)
您最近一年使用:0次
2021-05-12更新
|
889次组卷
|
2卷引用:天津市南开区2021届高三下学期二模数学试题