名校
1 . 已知函数
,其中
.
(1)求函数
的单调区间;
(2)设
,若对任意的
,
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1139dccb9e35e41b750bf66b4e996330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd10968900343aaaa158451018166fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2022-11-03更新
|
683次组卷
|
6卷引用:四川省泸州市泸县第五中学2019-2020学年高三上学期期末考试数学(文)试题
解题方法
2 . 已知
.
(1)讨论函数
的单调性,并求函数
的最值;
(2)设函数
,若
,有
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a25675b4d2792baaba0251c076b15b4.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1a0b7fe92c85d3edd64b46a5b00b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d02d6c50325772f2f5c5308f47d4d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e543fbea1efddbffd3200b0d7fcd6f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-11-02更新
|
270次组卷
|
2卷引用:河南省豫南九校2020-2021学年高三上学期教学指导卷(二)数学(文)试题
3 . 已知函数
,且函数
有且只有两个零点,若
,则
的值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c655a74769a380e9302ef277702cfa6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0605de3c30e4ec821705fe4ae6c40653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe091eb5adf8cf34b485007e3d3d801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb708adff55a5bda517c3f570f06584c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-11-02更新
|
169次组卷
|
2卷引用:河南省豫南九校2020-2021学年高三上学期教学指导卷(二)数学(文)试题
名校
4 . 对于定义域为R的函数
,若存在非零实数
,使函数
在
和
上与x轴都有交点,则称
为函数
的一个“界点”,则下列四个函数中,一定存在“界点”的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f97268759504a713ff0a78d7b55191c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c0d0b38c9c2222aae8d00ed437b61a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 广大青年要从现在做起,从自己做起,勤学、修德、明辨、笃实,使社会主义核心观成为自己的基本遵循,并身体力行大力将其推广到全社会去,努力在实现中国梦的伟大实践中创造自己的精彩人生.若“青年函数”
的导函数为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022240c6ee8c7b1569d3e3aa922686d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3a11457a1f0cd1b9bf81af2ebd99e7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-27更新
|
321次组卷
|
2卷引用:山东省青岛市青岛第三十九中学2020-2021学年高三上学期期中数学试题
名校
解题方法
6 . 现有一张长为80cm,宽为60cm的长方形铁皮
,准备用它做成一只无盖长方体铁皮盒,要求材料利用率为
,不考虑焊接处损失.如图,若长方形
的一个角剪下一块铁皮,作为铁皮盒的底面,用余下材料剪拼后作为铁皮盒的侧面,设长方体的底面边长为x cm,高为y cm,体积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/8e057b1a-0993-414f-828b-7fcbc99888a0.png?resizew=172)
(1)求出
与
的关系式;
(2)求该铁皮盒体积
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26292b7c55049ffaf44b4f46c467fed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c65664886b1d0ed9415c967f0115fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/8e057b1a-0993-414f-828b-7fcbc99888a0.png?resizew=172)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
(2)求该铁皮盒体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49afb888af42a0fd9dffa515b380b68.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
在
处取得极值
,其中
,
,
为常数
(1)求
,
的值
(2)若对任意
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3712f3ccf2ff3b9955d1a46be7449ba8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edeb09669a1331232a94fb0a3d7a8d88.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/071a7e733d466949ac935b4b8ee8d183.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c171c71e2f5720dfef502ed8e065918d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
.
(1)讨论函数的单调性;
(2)若
恒成立,求a的值;
(3)在(2)的条件下,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2732db2e8c08c795a7dd9076a06b67.png)
(1)讨论函数的单调性;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(3)在(2)的条件下,证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d41090991b120b3afb18a0e1d60d585.png)
您最近一年使用:0次
2023-03-10更新
|
513次组卷
|
2卷引用:安徽省芜湖一中2018-2019学年高二上学期期末理科数学试题
名校
解题方法
9 . 已知函数
在
处取得极值
,其中
为常数.
(1)求
的值;
(2)若对任意
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32b1a641b81c514b86d0f6a8ea3f111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edeb09669a1331232a94fb0a3d7a8d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c171c71e2f5720dfef502ed8e065918d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
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10 . 设
,
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若对
,有
,求
的取值范围;
(3)设
在
中有两个零点
,
,证明:
随着
的增大而减小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91d5400772001006982384a78ce268b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848c33e3506416358d9f0d3ee66f67a9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348551d9ea36d82fab80ae54df9d6c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3907da01aa2971e05262ecf58bafe27d.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311ff26a0cb99d45aaa85ec23a5505f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b817338735d4c23394d6601a7ea4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f1b4e037116928fd60f5892a211819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b0305f69331f9bbd5bbcecfc2a694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d4b8e7713f727e2c5d8cc30e50e28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
您最近一年使用:0次