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1 . 给出以下命题正确命题的选项为( )
A.要得到![]() ![]() ![]() ![]() |
B.函数![]() |
C.定义运算![]() ![]() ![]() ![]() ![]() ![]() |
D.函数![]() ![]() ![]() ![]() ![]() |
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2022-04-16更新
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273次组卷
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2卷引用:辽宁省沈阳市第一二〇中学2020-2021学年高一上学期4月数学月考试题
2 . 已知函数
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61228bf9a9e5bfa26e7e3eaeb48cf909.png)
.
(1)若函数
的图象过点
、
,求函数
的解析式;
(2)如图,点M、N是函数
的图象在
轴两侧与
轴的两个相邻交点,函数图象上一点
满足
,求函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064b3e9a9a7551f282b530877228cb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61228bf9a9e5bfa26e7e3eaeb48cf909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61df454f1485f9d448402586945b868.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023c93917c96d00ea4ba399fa441a685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b97fc3360cdfc250e7eb1bf24bcb64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)如图,点M、N是函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efe6112e30f859a68339fb6793bded8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6aa5d475a3da2ee13c1a407bc6e0b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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3 . 二次函数
为实数,对任意的
都有
和
恒成立.已知
的函数图象与
的图象有且只有一个公共点,这个公共点在第二象限.
(1)求证:
;
(2)若
的最小值为-10,求函数
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047b643568a5f86e592fc2f919cce0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b273ec7bc43fbbd941d1817a3b841a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c12d98e7a7fef3b4100f52b6125f69b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1d8d5cea065075fe50706abe3ae802.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e9e27ed3ef92663617c2f2815e7025.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a302d9c6416963c881b884bf4e4d783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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4 . 由单摆实验得到如图所示曲线,现用正弦函数模型
来拟合,其中
.已知
,则在实数范围内
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e115f70dedd6eb3739913849679b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2d7841114daf4fd38e14e2d2b591c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dff761780a5cacea697eead555a112b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354e0fcc5ce9a3446aeef0eb9a1d3c24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/45f9fd9b-67fc-4017-afac-16f11fe19983.png?resizew=148)
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