名校
解题方法
1 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e19e507e74c5793351e9ac1621d29d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838847f514a2a8f779a8a4ac775c92cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468faadf7a2a4f9bdc7402794364c3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e19e507e74c5793351e9ac1621d29d.png)
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名校
解题方法
2 . 已知函数
的图象过点
,若函数
区间
上单调递减,则实数k的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df10307e600fe26c220882537f0a40e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ca91ec71180d283245b3aea9616dc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
3 . 如图,
是边长为2的正三角形,记
位于直线
左侧的图形的面积为
.
(1)求函数
解析式;
(2)若
时,
成立,则当正实数
满足
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbd58a9596f66af9c26b1c8a0e9f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/a7316f09-d763-41d0-8c82-baa0242b638a.png?resizew=161)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8923e03a400252b0462268489bcef9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958749be01568ca0485e3537e138697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d61fa764dd343d2e97780a83afb7c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc176569ec8d428788cda28f6cac07a.png)
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名校
4 . 对
,
,记
,则函数
的最小值为 __________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1a047dd9d765dc82f2f763caac067e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d428a93b139b018801310ca3fb07ab.png)
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2024-04-02更新
|
380次组卷
|
2卷引用:陕西省宝鸡市宝鸡中学2023-2024学年高一上学期期中考试数学试题
解题方法
5 . 已知
是减函数,则实数a的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678cf71ec7e43f9b06cac0da9dbe311a.png)
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解题方法
6 . 已知函数
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/3d1bd810-67ab-46d9-93e0-a0afa9a3e87b.png?resizew=210)
(1)判断函数
的奇偶性并用定义证明;
(2)用分段函数的形式表示函数
的解析式,并直接在本题给出的坐标系中画出函数
的图像;
(3)用
表示
,
中的较大者,即
,若
,则求
的值 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578b5d562457a6ba731ee5a2dd3b1fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63716f1f42c412f23bfb2f3651638c4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/3d1bd810-67ab-46d9-93e0-a0afa9a3e87b.png?resizew=210)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)用分段函数的形式表示函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c694cf892ee07daa54bdd9f2fb421e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b345ba4baeae1041f7d69ad09dc326c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe57503d720d07a26770942b067d2cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 对于每个实数x,若函数
取三个函数
的最小值,则函数
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29e777f335399c71bd6ee7b3c1df6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() | B.![]() | C.![]() | D.4 |
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解题方法
8 . 为进一步改善空气质量,增强人民的蓝天幸福感,
年
月
日,国务院公开发布
打贏蓝天保卫战三年行动计划
,其中京津冀地区被列为重点治理区域.某课外活动小组根据北京市预报的某天
时
空气质量指数数据绘制成散点图,并选择连续函数
来近似刻画空气质量指数
随时间
变化的规律
如图
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/964fa465-1aac-449b-ae8d-8c0b06626075.png?resizew=306)
(1)求
,
的值;
(2)当空气质量指数大于
时,有关部门建议市民外出活动应戴防雾霾口罩,并禁止某行业施工作业.请你结合该课外活动小组选择的函数模型,回答以下问题:
(i)某同学该天
:
出发上学,是否应该戴防雾霾口罩?请说明理由;
(ii)试问该天
:
之后,该行业可以施工作业的时间最长为多少小时?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6567511bb9486b2ca7452b870abd2a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b0e787c1d82071c825975348698f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461950348087cdb06ec28d7569d14c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf4ba80c2b40227655676eb6b34d461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861b1123fa7fc6df45d115cb3cbc0b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/964fa465-1aac-449b-ae8d-8c0b06626075.png?resizew=306)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当空气质量指数大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7afc6e67a875ed2eb889e950a77715.png)
(i)某同学该天
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8937d7f5eb113bdd1d4eb407d9bfad.png)
(ii)试问该天
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8937d7f5eb113bdd1d4eb407d9bfad.png)
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解题方法
9 . 已知函数
的图像经过点
.
(1)求函数
的解析式;
(2)判断函数
在
上的单调性并证明;
(3)当
时,
的最小值为3,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0df848bc19edcbe6daf56f36a8b56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8be8de0230f64e618c6a7362f3099d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae61f4eb1e4f52cb48e523d0065bd49.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387e9eb75d1b04eee0c50b3a38f90c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
解题方法
10 . 已知
为
上的奇函数,当
时,
.
(1)求
的值;
(2)求
的解析式.
(3)写出解不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be315e528951120e7d551f654d2a1f5e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)写出解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7a75bcd70f6b1a6d02dbb92e964e1b.png)
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