解题方法
1 . 已知定义在区间
的函数
.
(1)证明:函数
在
上为单调递增函数;
(2)设方程
有四个不相等的实根,在
上是否存在实数
,
,使得函数
在区间
上单调,且
的取值范围为
?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/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d2f2a63f13c52efec9cb3d2b06be46.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c632f17a9df17d27323360f80ccd0794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d3856e530822adb5ee97d1be8c1bbe.png)
(2)设方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7295806db8311b0768a590129de4d956.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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8af7bed124f00c8e19b52d028b4d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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解题方法
2 . 下列函数中,满足“
,
,都有
”的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7d25213045e645b6eb59fa7c7ec0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd8bbf8d8b088f1df100e2347c351c3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 如图,某中学准备在校园里利用院墙的一段,再砌三面墙,围成一个矩形花园
,已知院墙
长为25米.篱笆长60米(篱笆全部用完),设篱笆的一面
的长为
米.
(1)当
的长为多少米时,矩形花园的面积为400平方米?
(2)若围成的矩形
的面积为
平方米,当
为何值时,
有最大值,最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/f1448b82-b31a-469b-8e62-76e57511848a.png?resizew=185)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若围成的矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2023-11-19更新
|
287次组卷
|
3卷引用:福建省厦门市海沧中学2023-2024学年高一上学期期中考试数学试题
名校
解题方法
4 . 函数
在
上是单调函数,则实数
的取值范围可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d8f223d1d2d178ae71e616669c9f81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ca651bfc89628a3b05c6e87ce5d6f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
5 . 已知函数
.
(1)若
在区间
上具有单调性,求实数
的取值范围;
(2)求
在区间
上的最小值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffab01443bdf02215f8ac3a42d35ea.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55503c093ffb545056ba2a313f21b25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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解题方法
6 . 设函数
.
(1)若
在区间
上的最大值为
,求
的取值范围;
(2)存在实数
,使得当
时,
恒成立,求
的最大值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd63ef3ff6d79668dbbdff129823f94.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1179338aaa7f469d91589dcda0b51197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb8ea0b94a4dfdca119d09234656878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-11-10更新
|
227次组卷
|
2卷引用:福建省泉州市惠南中学2023-2024学年高一上学期12月月考数学试题
名校
7 . 已知函数
满足
,且
.
(1)求
的解析式;
(2)求
的值,使
在区间
上的最小值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ec3ee0148889d294986b4e86d21575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c559d1865ea300ce95bc0eaf31c56d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71dbce0ccda0f5df7d0555fa23bf770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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8 . 若函数
在
上不单调,则实数
的值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60f80e4ead7cae30772cd49f1b34ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.-6 | B.-4 | C.0 | D.4 |
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9 . 下列选项正确的有( )
A.若![]() ![]() |
B.已知![]() ![]() ![]() ![]() |
C.函数![]() ![]() ![]() |
D.已知全集![]() ![]() ![]() |
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10 . 函数
的定义域为R,满足
,且当
时,
.若对任意
,都有
,则m的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2b880a6e4a2c31658e2b2d49875bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c7bba069a33fd4d8d2ac6449148da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58640a13608e28bdba923ce9b0fc2f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d878e6ccd947902529a5701e0d59c04e.png)
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2023-10-26更新
|
400次组卷
|
3卷引用:福建省南平市高级中学2023-2024学年高一上学期期中考试数学试题
福建省南平市高级中学2023-2024学年高一上学期期中考试数学试题四川省内江市第六中学2023-2024学年高三上学期第一次月考文科数学试题(已下线)考点9 与二次函数相关的参数问题 --2024届高考数学考点总动员【讲】