1 . 已知函数
.
(1)当函数
在点
处的切线方程为
,求函数
的解析式;
(2)在(1)的条件下,若
是函数
的零点,且
,求
的值;
(3)当
时,函数
有两个零点
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98ac2f17893b3a65f6e0b0fe2b92374.png)
(1)当函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c887da0c850acf41ab249cc262ae39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94004e756bed5ac08a2062a8bab8992f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8edd94c1ef4ab5557e938278ef066c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02657ab1c65825868e49acb108fdd862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c45b5bbd5fb7706c6f7c24df34fc145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d14ff8de4b75799117d109d9655032.png)
您最近一年使用:0次
2016-12-04更新
|
718次组卷
|
5卷引用:湖北省宜昌市第二中学2019-2020学年高三上学期10月月考数学(理)试卷
名校
解题方法
2 . 如图,已知直线
与抛物线
相交于
、
两点,且满足
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8abcceb8a90f470553247db02d4ac314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/3003587b95523caeb2d8ccaf27fa5a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/5edfd2db-4e21-466c-a5d5-3aa8390a0013.png?resizew=105)
您最近一年使用:0次
2020-03-25更新
|
197次组卷
|
3卷引用:2019届湖北省黄冈市高三下学期3月调研考试数学(文)试题
13-14高二·江西宜春·阶段练习
名校
3 . 已知函数
.
(1)讨论函数
的单调性;
(2)若函数
在
处取得极值,不等式
对
恒成立,求实数
的取值范围;
(3)当
时,证明不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff615387db7c9645acc1a82f8dd428a.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71944acb81a6e3e219f6f6f748ee3f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e81b4aac721bcd4a49593b48a28a8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4db634159e02e30a5996f4296ceb91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246400d13391f177bde3d4b923146fe4.png)
您最近一年使用:0次
2016-12-03更新
|
683次组卷
|
3卷引用:【校级联考】湖北省宜昌市(宜都二中、东湖高中)2019届高三12月联考数学(理)试题
【校级联考】湖北省宜昌市(宜都二中、东湖高中)2019届高三12月联考数学(理)试题甘肃省天水市第一中学2019届高三下学期第三次模拟考试数学(理)试题(已下线)2013-2014学年江西宜春上高二中高二第六次月考理数学卷
4 . 已知函数
,在函数
图象上任取两点
,若直线
的斜率的绝对值都不小于5,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e75c41d8b065b290764289da17b467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 若
.
(1)讨论
的单调性;
(2)若对任意
,关于
的不等式
在区间
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530c25bbb7fa0c502b07bdc4382cdfc1.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e436ea3ddcd13e69171135f0ff8e934a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59814f772897e922920b9b4f60bdcefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729af7fcdfcff9998cfddc43297b8f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
6 . 已知函数
,不等式
对
恒成立.
(1)求函数
的极值和实数
的值;
(2)已知函数
,
,其中
为自然对数的底数.若存在
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb72f570934eead8f16ba6be1dbdf818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdab6cdeadd4f883f1fbd15653d8a649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74eb7b0102cd1255713df18ecc7d171a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a18b2c486a7e6eb23e76cf2d601cd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279958773492e82275ea826e3f247d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d978e4e41c7b382a640d8c548e8ccb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d51a68ad824e9622c422730049494ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
7 . 已知函数
的导函数为
,
,且函数
存在零点
.
(1)求实数
、
的值;
(2)当
时,不等式
恒成立,求实数
的取值范围(参考数据:方程
的一个近似解
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba33b34e546c945d870013e2a94f0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a587fb0ee137864d8ecd72274540af38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fe357d60bf691c95723eb152c37203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50dc977e9ac0eeaf9fa581d1feba9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d61db1616bae285b329c184f84c6d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36004a6491f4f1ec208e346808b73f00.png)
您最近一年使用:0次
2019-10-12更新
|
149次组卷
|
2卷引用:2019年9月湖北省黄冈市高三质量检测数学(理)试题
解题方法
8 . 设函数
.
(1)若不等式
对任意的
,
都成立,求实数m的取值范围;
(2)关于x的方程
在
上有且只有一个解,求实数k的取值范围.
参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dacfafc0b01f8e530c7449d8df365424.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf7a0098d4ea8a0ad76dab74698fcb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9013a54452d24014e260fb31fca4e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f86d6c380982b4bef58c7e047983376.png)
(2)关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/330d61bc0eac3bb6e1a8aefb73ac171e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
您最近一年使用:0次
解题方法
9 . 已知函数
,
.若对于任意的
,都存在
使得
成立,则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e9c0f8be18ca8f47c6931daed25949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34ead7c3f5652ed0a676cd0555352ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d36be8f11281b4434a526adae027535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17641d15644d5fb2c79fd1016b21520f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
10 . 已知函数
,曲线
在点
处的切线与直线
垂直.
(1)求
的值.
(2)令
,是否存在自然数
,使得方程
在
内存在唯一的根?如果存在,求出
,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a274b0623171972513340511781ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c204834608f1a8fba15747210dd7c5af.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3554f8e28007f8db46942ce40d649b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d94e5edc48a908e96404888ec8cc32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次