1 . 已知正四棱锥
的底面边长和高均为3,
,
分别是棱
,
上一点,且满足
,
,过
作平面与线段
,
分别交于
,
,则四棱锥
的体积的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f72900e99805cc33b49290b34fdea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab17db7fa678440a3c2ba967a5f0100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e348d64f5f44a3a2f494416a91b30f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae67e34557a55602210793286e176c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bb1c5af4c7a9376882867e07690b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73103fba75b7601c46670c58f328a10f.png)
您最近一年使用:0次
名校
2 . 已知函数
.
(1)讨论
的单调性;
(2)若
存在两个极值点
,
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01753bda32310aa5af5dff77ce14268.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dead3e22c12b7bf0c0b6878e848df993.png)
您最近一年使用:0次
2018-12-31更新
|
791次组卷
|
4卷引用:【市级联考】河北省邢台市2019届高三上学期一轮摸底考试(12月)数学(文)试题
名校
3 . 设函数
.
(1)当
,
时,
恒成立,求
的范围;
(2)若
在
处的切线为
,求
、
的值.并证明当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212ed9b23983b9e8462e169e8b442c2c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168163183a3d4663be45755f44676191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baabfd32465e9e50409413d9c1358279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c513e5d9183d11d2cc62eab6e305d5c.png)
您最近一年使用:0次
2018-03-02更新
|
1586次组卷
|
12卷引用:河北省邢台市第一中学2020-2021学年高二下学期第三次月考数学试题
河北省邢台市第一中学2020-2021学年高二下学期第三次月考数学试题河南省豫南九校2018届高三下学期第一次联考试题理科数学河南省豫南九校2018届高三下学期第一次联考理数试题【全国百强校】黑龙江省鹤岗市第一中学2019届高三上学期第三次月考数学(理)试题【全国百强校】河北省邢台市第一中学2018-2019学年高二下学期第三次月考数学试题江苏省南通市如皋中学2019-2020学年高一(创新班)下学期6月阶段考试数学试题2020届广东省惠州市高三6月模拟数学(理)试题河北省冀州中学2021届高三上学期第三次月考数学试题云南省曲靖市罗平县第二中学2019-2020学年高二下学期期末考试数学(理)试题云南省曲靖市罗平县第二中学2019-2020学年高二下学期期末考试数学(文)试题四川省宜宾市叙州区第二中学校2022届高三三诊模拟考试理科数学试题(已下线)第九章 导数与三角函数的联袂 专题三 含三角函数的恒成立问题 微点2 三角函数的恒成立问题(二)
名校
解题方法
4 . 已知
,函数
.
(1)若曲线
在点
处的切线的斜率为
,判断函数
在
上的单调性;
(2)若
,证明:
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ec0f112f81bbc09434743eeb2fdf17.png)
(1)若曲线
![](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/d1f190b17530d81d927c358ac84757a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d9b668cdc64c34cf49962b3fadadf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c82e03a254bea3f5f5e1e4d17a9fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6711f624336a86026873ac5616ac72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
您最近一年使用:0次
2018-02-22更新
|
857次组卷
|
7卷引用:河北省邢台市2018届高三上学期期末考试数学(理)试题
5 . 已知函数
.
(1)设函数
,若曲线
在点
处的切线方程为
,求
的值;
(2)是否存在实数
,使得
对
恒成立?若存在,求
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81344623eb224cd50013c7ba7844bfa8.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4f764b0d11755922ef4f6c55297248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80cf0f8829ad6ed064ba129545b2d3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109c14e7a0c4dce57fd2b86eba638692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8748f9bf0e49e067f65b9ce54c4718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
6 . 已知
,函数
.
(1)若曲线
在点
处的切线的斜率为
,求
的值;
(2)设
,证明:
对
恒成立;
(3)若
,证明:
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e024451d190b9b36d9c539ed1a6aebe.png)
(1)若曲线
![](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/d1f190b17530d81d927c358ac84757a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d548342971e2f9d88d1d986d3f57437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880270d8cc1cf4f9e380f8963cb9f84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c82e03a254bea3f5f5e1e4d17a9fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6711f624336a86026873ac5616ac72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
您最近一年使用:0次
7 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若对任意的
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d092354d8581d0c33e90ceec313b28c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccc99093ff159b3f94de7033dadde16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d0cd47609b9d1865dfff4979161cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-12-08更新
|
488次组卷
|
2卷引用:河北省邢台市育才中学2018届高三上学期第三次月考数学(文)试题
名校
8 . 已知函数
且
.
(1)若函数
区间
上单调递增,求实数
的取值范围;
(2)设函数
,
为自然对数的底数.若存在
,使不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed03177c6fdeea23ee900ec505848663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49555ee4db8c9842b0a3a7d6dfb1dda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6cf94a58e714ed5c8de2591020c1b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b623e2b86cf5e6d3b9f157fa9787a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2017-11-06更新
|
1013次组卷
|
4卷引用:河北省邢台市2018届高三上学期第二次月考数学(文)试题
9 . 已知函数
的图象在点
处的切线方程为
.
(1)求曲线
在
处的切线方程;
(2)若存在
,满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8f4a6569b89b136bc697b099d94354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea59cee971344ed593ff082a65d177c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa7643069ed26c098512069b393deef.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f6ddae0d485425bccc909b9232ed91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7e5c1831c9c6fdf8012992ded1b360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522215c9ecd7ed454a04ed65dfe33d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-09-23更新
|
794次组卷
|
3卷引用:河北省邢台市育才中学2018届高三上学期第三次月考数学(理)试题
名校
10 . 设函数
在
上存在导函数
,对任意的实数
都有
,当
时,
.若
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4abd4064842d8bac6d030d2d18364ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842c2ef9893cc67e621e272fa0be9926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2252991c07ea8bff685047fcd23e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6696955ff8ffafbb9a9c07c0138cff00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-09-19更新
|
1359次组卷
|
8卷引用:河北省邢台市第二中学2018届高三上学期第一次月考(开学考试)数学(理)试题