名校
1 . 如图,在平面直角坐标系
中,半径为1的圆
沿着
轴正向无滑动地滚动,点
为圆
上一个定点,其初始位置为原点
为
绕点
转过的角度(单位:弧度,
).
表示点
的横坐标
和纵坐标
;
(2)设点
的轨迹在点
处的切线存在,且倾斜角为
,求证:
为定值;
(3)若平面内一条光滑曲线
上每个点的坐标均可表示为
,则该光滑曲线长度为
,其中函数
满足
.当点
自点
滚动到点
时,其轨迹
为一条光滑曲线,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c9643bf4dd7e04efa4644412491725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c81b29ac8a01886b25dcef55c5f6877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ce55c4ff508755d16c375625437027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69218ef831edc8173b4029ea99eda87.png)
(3)若平面内一条光滑曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc031988b2a4dcd840069dbd3a1c810e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dfe48a76ae71f8925b731e8c330bdb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d69e7fb25c60ee47440a1ece037544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a8bcf6ef69b6bdfc84e8472a259bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016b58ad9076316abaf809dea297256a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016b58ad9076316abaf809dea297256a.png)
您最近一年使用:0次
2024-03-13更新
|
1244次组卷
|
3卷引用:河南省南阳市西峡县第一高级中学2023-2024学年高二下学期第一次月考数学试卷
名校
2 . 公元263年,刘徽首创了用圆的内接正多边形的面积来逼近圆面积的方法,算得
值为3.14,我国称这种方法为割圆术,直到1200年后,西方人才找到了类似的方法,后人为纪念刘徽的贡献,将3.14称为徽率.我们作单位圆的外切和内接正
边形
,记外切正
边形周长的一半为
,内接正
边形周长的一半为
.通过计算容易得到:
(其中
是正
边形的一条边所对圆心角的一半)
(1)求
的通项公式;
(2)求证:对于任意正整数
依次成等差数列;
(3)试问对任意正整数
是否能构成等比数列?说明你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bbccb799ae7eb992b25b2426173ed36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96936fc2a366e6a8d1dfae54322d5d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffa8be5a02790c6161c56b8e90db64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求证:对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac64c640ccd57708681eada27a8fa6d.png)
(3)试问对任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e42bf4d8449d427c1f5f252db0f298.png)
您最近一年使用:0次
2023-07-21更新
|
386次组卷
|
3卷引用:4.3.1 等比数列的概念——课后作业(提升版)
名校
3 . (1)指出函数
的最大值,及函数取得最大值时所对应的
的值,并画出该函数在一个最小正周期内的大致图像;
(2)指出正弦函数
的单调性,并以此为依据证明:余弦函数
在区间
是严格增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675b782da4dc4e5fc0ccb6cce7f5da8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)指出正弦函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3162d2c7b650bba3e401ffbb1e13bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e7e79ac17c51c7a4aaf9d59ec9beb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd2a529663128e51fdf8e85a3a585675.png)
您最近一年使用:0次
2023-07-05更新
|
281次组卷
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5卷引用:模块三 专题4 三角函数的性质与图像(基础卷A)
(已下线)模块三 专题4 三角函数的性质与图像(基础卷A)上海市静安区2022-2023学年高一下学期期末数学试题安徽省定远中学2022-2023学年高一下学期7月教学质量检测数学试卷(已下线)7.2 余弦函数的图像与性质-高一数学同步精品课堂(沪教版2020必修第二册)(已下线)上海市高一数学下学期期末模拟试卷01-期末考点大串讲(沪教版2020必修二)