解题方法
1 . 已知函数
.
(1)若对
时,
,求正实数
的最大值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdfd509af00960319b088b20d3d4189a.png)
(1)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b705b0958495774d529c2e2a6c3ae94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477b45c90cd1fd5bd772d5b93e1c7508.png)
您最近一年使用:0次
解题方法
2 . 已知函数
.
(1)若函数
在定义域内不单调,求实数
的取值范围;
(2)若函数
在区间
内单调递增,求实数
的取值范围;
(3)若
、
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4843f1dcea336f53472bcbde15837f4d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf87d9d48c3de0a5e9f1a70e51a0bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8757d513d9ad1f3ced929a18a976b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7859295d53096508e5bad78c445e4f9.png)
您最近一年使用:0次
3 . 定义:若曲线
或函数
的图象上的两个不同点处的切线互相重合,则称该切线为曲线
或函数
的图象的“自公切线”.
(1)设曲线C:
,在直角坐标系中作出曲线C的图象,并判断C是否存在“自公切线”?(给出结论即可,不必说明理由)
时,函数
不存在“自公切线”;
(3)证明:当
,
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0ee1a614e16f3092d318d74a252775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e78b9c2b82517c887804b6ad8742a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0ee1a614e16f3092d318d74a252775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e78b9c2b82517c887804b6ad8742a85.png)
(1)设曲线C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda51f0c169b59ac826994bebae3bc6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a033e1ff47a23c84900de3c27ef453.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c46b33730f3a29b9ec3024df71375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6725fd6db412e3c0caf9987018b43994.png)
您最近一年使用:0次
2024-05-30更新
|
433次组卷
|
2卷引用:辽宁省大连市二十四中学2023-2024学年下学期高三第五次模拟考试数学卷数学
名校
解题方法
4 . (1)已知函数
及其导函数
的定义域均为
,设
是曲线
在点
处的切线的方程. 证明:当
是增函数时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)已知
,设
的最大值为
,证明:
.
(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4f6388b5809b156ce9289dc5846920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38da3eb873f57196dc4fda166a1db16e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5b440818076e1e7fa8800fa848ae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08320e6e96f872f1fcf6ad8096ebaa10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01a1e17f4bd23682465df5b42309725.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06341cc14870ff71931aae0d3d78abfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ebbae545ae1e8e4b06bf861fa53e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a2f2d080ac398bea650aecd40ca8ab.png)
您最近一年使用:0次
名校
5 . 已知函数
,当
时,
.
(1)求
的取值范围;
(2)求证:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab9b0f783f0b6a8b7c2e214e4f04d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5d9d53504738042040c638756f55a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
您最近一年使用:0次
6 . 已知函数
,(
,
).
(1)讨论函数
的单调性;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1139dccb9e35e41b750bf66b4e996330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dc334f806ac8924be42bbded1b885a.png)
您最近一年使用:0次
解题方法
7 . 已知质数
,且曲线
在点
处的切线方程为
.
(1)求m的值;
(2)证明:对一切
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e2da4647a9925ccc924b0f9f3b40ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8eb06f527d4201b93636710c62d461.png)
(1)求m的值;
(2)证明:对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92222bd1bfa79c6082eea07ced5a98ef.png)
您最近一年使用:0次
2024-05-14更新
|
464次组卷
|
2卷引用:辽宁省葫芦岛市协作校2023-2024学年高三下学期第一次考试数学试卷
名校
8 . 已知
,
,
是关于x的方程
的三个不同的根,且
.
(1)求a的取值范围;
(2)证明:
.
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d1031ed0ad1f362f0fca05e4761034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
(1)求a的取值范围;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafcbd8c4efe661449b82f4ccdc6f70c.png)
您最近一年使用:0次
2023-12-29更新
|
466次组卷
|
5卷引用:辽宁省朝阳市部分学校2024届高三上学期12月考试数学试题
名校
9 . 已知函数
.
(1)讨论
的单调性;
(2)设
,若
,
是
的两个极值点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b450287f8fa1f4687f3efc3fd7444e2e.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4fa78856909db6d9e7c43078bcc7ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4588a79e160bca3711b1151a52f26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1b9f152654fd42b112adb81a5879bc.png)
您最近一年使用:0次
2023-11-09更新
|
617次组卷
|
5卷引用:辽宁省县级重点高中协作体2023-2024学年高三上学期11月期中考试数学试题
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ed07b0ce942687ba7a87c997a7b767.png)
(1)讨论函数
的单调性;
(2)若
,证明:
,
.(提示:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ed07b0ce942687ba7a87c997a7b767.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc55062abcda348cb4cf9837e2ab936d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bad5c8a4e4bad474651c0a61de820ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaa7db4b6344ee1bc22e47e4c760533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe8be09d4ab0e414d110e09ee20e3df.png)
您最近一年使用:0次
2023-10-12更新
|
154次组卷
|
2卷引用:辽宁省朝阳市名校联考2023-2024学年高三上学期开学数学试题