1 . 如图,有一块半椭圆形钢板,其长半轴长为
,短半轴长为
,计划将此钢板切割成等腰梯形的形状,下底
是半椭圆的短轴,上底
的端点在椭圆上,梯形面积为
.
(1)当
,
时,求梯形
的周长(精确到
);
(2)记
,求面积
以
为自变量的函数解析式
,并写出其定义域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166efa67705b346727237621661792cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d537c96271b832c9be89c578b154bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5062543da033a302a4052be1b54bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c849262e06940b0c3a01e3de42e80e61.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e963ad5aba1d65761c89d318b772c788.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/b3d07ffd30d02232fdf9cf209afd7c8e.png)
![](https://img.xkw.com/dksih/QBM/2018/7/1/1979354662936576/1980320213295104/STEM/b7f4cf0f1c3941a7be0c7060ade3e059.png?resizew=144)
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解题方法
2 . 定义函数
,则函数
在区间
内的所有零点的和为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df0ce4f3cbc8cc75f3c68f70b2630ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b607e89606628286d9c670a4efdf03.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572057013944320/1572057019555840/STEM/463ed70c40b7446e82b716072e8356d7.png?resizew=28)
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2016-12-03更新
|
676次组卷
|
5卷引用:2015届上海市奉贤区高三上学期期末调研测试数学试卷
2015届上海市奉贤区高三上学期期末调研测试数学试卷2019年上海市上海师范大学附属中学高三下学期第二次质量检测数学试题上海市南洋模范中学2019-2020学年高三上学期9月月考数学试题(已下线)专题04+函数图像综合应用-2020-2021学年新教材高一数学寒假辅导讲义(沪教版2020)沪教版(2020) 必修第一册 堂堂清 第五章 复习检测五
2014·上海奉贤·二模
名校
3 . 定义在
上的函数
满足:①当
时,
;②
,设关于
的函数
的零点从小到大依次记为
,则
________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04e67e37fbf0c78aeb7278a9ae1cb8.png)
![](https://img.xkw.com/dksih/QBM/2014/4/28/1571688124825600/1571688130519040/STEM/93d8d58b8ebd4f91993141e9b0eecfcf.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a940e5f45501eba9b07b73b2248bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6871c78dbeaa7b631a6c0731fc0e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee7293a7c117b6de4bd7e08ef402a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ebf9e29bec3e2c1831c10bf05573aa.png)
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11-12高三·上海奉贤·期末
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4 . 函数
定义
的第k阶阶梯函数
其中
,
的各阶梯函数图像的最高点
,
(1)直接写出不等式
的解;
(2)求证:所有的点
在某条直线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64102e427ff7de0f58598a44b9e538aa.png)
定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62965871a499ff7a6fcb8b5dc52a2cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a616b71b8c4dd8ca2ad89989aff2f06.png)
(1)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f6313f09d17496008ebe3cc1fca0ca.png)
(2)求证:所有的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://img.xkw.com/dksih/QBM/2012/1/28/1570701930340352/1570701935951872/STEM/5a9af3db09e549d985acbb636da0482b.png?resizew=15)
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