1 . 已知
,动点
满足
,动点
的轨迹为曲线
交
于另外一点
交
于另外一点
.
(1)求曲线
的标准方程;
(2)已知
是定值,求该定值;
(3)求
面积的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107a80eeecf2efcb25cb008945c1c241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cced7a3d18b398c1da1218d74a96542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ac4aa6db80d4edfd287abc4580e68b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c72be8e3e113103ca7de54ac39c2313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da79ae7251aa6d5822b5396a632b01c7.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
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3卷引用:浙江省宁波市镇海中学2024届高三下学期适应性测试数学试卷
2 . 如图,在矩形ABCD中,
,
,对角线AC、BD相交于点O,动点P、Q分别从点C、A同时出发,运动速度均为1cm/s,点P沿
运动.到点B停止,点Q沿
运动,到点C停止. 连接
,设
的面积为
(这里规定:线段是面积为0的几何图形),点Q的运动时间为x(s).
时,求x的值;
(2)当
时,求y与x之间的函数关系式;
(3)直接写出在整个运动过程中,使
的所有
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee5bd6f04872ef8d3d833d0e2056161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e40cc1f35e71e2abf5943a21fe448df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82baca47182531f9f2135ef3056cc1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3087da5c11909dab613378fee8d471fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ed47b8230bc383b2c167264f750d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012b14b48c09eb820c49c13dccb642bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10bb426e00de29d8664ca5babb2f4f3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc1a1c6781dc4554c47e2affb00405c.png)
(3)直接写出在整个运动过程中,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ecd96adaec63c5bbd65f59f885ecfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . 定义:对于定义在区间
上的函数,若存在实数
,使得函数在区间
上单调递增(递减),在区间
上单调递减(递增),则称这个函数为单峰函数且称
为最优点.已知定义在区间
上的函数
是以
为最优点的单峰函数,在区间
上选取关于区间的中心
对称的两个试验点
,称使得
较小的试验点
为好点(若相同,就任选其一),另一个称为差点.容易发现,最优点
与好点在差点的同一侧.我们以差点为分界点,把区间
分成两部分,并称好点所在的部分为存优区间,设存优区间为
,再对区间
重复以上操作,可以找到新的存优区间
,同理可依次找到存优区间
,满足
,可使存优区间长度逐步减小.为了方便找到最优点(或者接近最优点),从第二次操作起,将前一次操作中的好点作为本次操作的一个试验点,若每次操作后得到的存优区间长度与操作前区间的长度的比值为同一个常数
,则称这样的操作是“优美的”,得到的每一个存优区间都称为优美存优区间,
称为优美存优区间常数.对区间
进行
次“优美的”操作,最后得到优美存优区间
,令
,我们可任取区间
内的一个实数作为最优点
的近似值,称之为
在区间
上精度为
的“合规近似值”,记作
.已知函数
,函数
.
(1)求证:函数
是单峰函数;
(2)已知
为函数
的最优点,
为函数
的最优点.
(i)求证:
;
(ii)求证:
.
注:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb94dc04ff686b4e3023ff3f3f0ebb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3819123c00dd8547948fd6a142d23eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62461b16d4a05da2cfdd0c9b79a9874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f89a8b5cf6996a6455375e405bfb9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef130ac86847aa71b7dcbb631b60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976f8d8750bfaf95aac23678f0bd926a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976f8d8750bfaf95aac23678f0bd926a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbba4740e36449b5c76eedd40519cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fc0013f0aabb967d8efa25d0e90849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3449936da13a15ad19bf5c113c04a2f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f556fdf351f94bfb3d7ed2ded23fda93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34acf1ac6dfe5e76b611e465464344c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f556fdf351f94bfb3d7ed2ded23fda93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.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/82d8e0a088b964419617c5bae4b033bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acec765e99a3ac8d612a1ad0727c762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efec0433e7bdec251e52323372a5f0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5d19be359b21225331a07e6cf98d41.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538004bbc472e5dbf323325a596a7cf6.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9c33cd26d7faec943ffca1fcb449db.png)
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a5efb1aa1c4e3f8017ffa6e5025d73.png)
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3卷引用:浙江省宁波市2023-2024学年高三下学期高考模拟考试数学试题
4 . 指示函数是一个重要的数学函数,通常用来表示某个条件的成立情况.已知
为全集且元素个数有限,对于
的任意一个子集
,定义集合
的指示函数
若
,则( )
注:
表示
中所有元素
所对应的函数值
之和(其中
是
定义域的子集).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37959331f824e0153871d62a13cb30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85325300b6ce106910cc9e758b56e6b.png)
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2059b60ca47a69612f16e1a3f63d8cf6.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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
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3卷引用:浙江省宁波市2023-2024学年高三下学期高考模拟考试数学试题
5 . 某次高三数学测试中选择题有单选和多选两种题型组成.单选题每题四个选项,有且仅有一个选项正确,选对得5分,选错得0分,多选题每题四个选项,有两个或三个选项正确,全部选对得5分,部分选对得2分,有错误选择或不选择得0分.
(1)若小明对其中5道单选题完全没有答题思路,只能随机选择一个选项作答,每题选到正确选项的概率均为
,且每题的解答相互独立,记小明在这5道单选题中答对的题数为随机变量
.
(i)求
;
(ii)求使得
取最大值时的整数
;
(2)若小明在解答最后一道多选题时,除发现A,C选项不能同时选择外,没有答题思路,只能随机选择若干选项作答.已知此题正确答案是两选项与三选项的概率均为
,问:小明应如何作答才能使该题得分的期望最大(写出小明得分的最大期望及作答方式).
(1)若小明对其中5道单选题完全没有答题思路,只能随机选择一个选项作答,每题选到正确选项的概率均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beded6e21d93573807f67478c74e7e24.png)
(ii)求使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef133b0fd53a48310a82c18729575abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若小明在解答最后一道多选题时,除发现A,C选项不能同时选择外,没有答题思路,只能随机选择若干选项作答.已知此题正确答案是两选项与三选项的概率均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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解题方法
6 . 我们把底数和指数同时含有自变量的函数称为幂指函数,其一般形式为
,幂指函数在求导时可以将函数“指数化"再求导.例如,对于幂指函数
,
.
(1)已知
,求曲线
在
处的切线方程;
(2)若
且
,
.研究
的单调性;
(3)已知
均大于0,且
,讨论
和
大小关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541b679b72673528f0e37bfeb6d1dff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46d3504fd4d99c1a9a293a9363256ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fc4b04f98545b403a28d41c6e109c4.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7395df460e74ac91beeb82f99bf301ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e7930731eddbcfac592b808e9b698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b91f5cf5a5fede52e96a0cb5ac079b.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607ea0d316d84b1ea5e6e735ac29b332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94933201271f9408e70cd2f2182f4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c632bdc4a2b1c4891d1cf5345571d23.png)
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7 . 已知
为坐标原点,曲线
:
,
,
为曲线
上动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344d74115e7a6f0ccfa585a2542f91f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
A.曲线![]() | B.曲线![]() |
C.![]() | D.![]() ![]() |
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8 . 如图是函数
的部分图象,其中
,
.其中
为图象最高点,
为图象与
轴的交点,且
为等腰直角三角形,
,______.(从下面三个条件中任选一个,补充在橫线处并解答)
①
;②
是奇函数;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c0f265e9fcd62118f188f7d91418d7.png)
的解析式;
(2)设
,不等式
对于
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8665842489bc1b588fa43d34730fd1d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb61a448347a3f8c1f126d1c00730cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b649eb6d189e624fc45ff8a6ae1b38d1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d26f7a7ee64b6c7a674f21d3702581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97c6c1da5ca59e1030060cf0f8478dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c0f265e9fcd62118f188f7d91418d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bf8b165e8253851969c2d042ada821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3b8864ae91490f72e8340cf7513923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a976d91358362fa49d6da8021fd47e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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|
3卷引用:浙江省宁波市镇海中学2023-2024学年高一上学期期末数学试卷
浙江省宁波市镇海中学2023-2024学年高一上学期期末数学试卷四川省达州外国语学校2023-2024学年高一下学期3月月考数学试题(已下线)专题03y=Asin(ωx+φ)的综合性质期末8种常考题型归类-《期末真题分类汇编》(人教B版2019必修第三册)
解题方法
9 . 已知圆O的方程为
,与x轴的正半轴交于点N,过点
作直线与圆O交于A、B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/904b633f-5330-4935-bd6d-5ba8bb4a54e6.png?resizew=188)
(1)若坐标原点O到直线AB的距离为1,求直线AB的方程;
(2)如图所示,作一条斜率为-1的直线交圆于R,S两点,连接PS,PR,试问是否存在锐角
,
,使得
为定值?若存在,求出该定值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516d6c4c677a9552349b9bf78ec25d87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/904b633f-5330-4935-bd6d-5ba8bb4a54e6.png?resizew=188)
(1)若坐标原点O到直线AB的距离为1,求直线AB的方程;
(2)如图所示,作一条斜率为-1的直线交圆于R,S两点,连接PS,PR,试问是否存在锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157c011c410c3a25dd72953187af1506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c88253c852bbe1c19469ae3900661f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1c01fe8e6e31f94fd894588ae27cc0.png)
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解题方法
10 . 某中学在运动会期间,随机抽取了200名学生参加绳子打结计时的趣味性比赛,并对学生性别与绳子打结速度快慢的相关性进行分析,得到数据如下表:
(1)根据以上数据,能否有99%的把握认为学生性别与绳子打结速度快慢有关?
(2)现有n
根绳子,共有2n个绳头,每个绳头只打一次结,且每个结仅含两个绳头,所有绳头打结完毕视为结束.
(i)当
,记随机变量X为绳子围成的圈的个数,求X的分布列与数学期望;
(ii)求证:这n根绳子恰好能围成一个圈的概率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f34a85a61fcc926833ed2775f376541.png)
附:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c1698cf3a31568a8ff6f6d4ee280e8.png)
性别 | 速度 | 合计 | |
快 | 慢 | ||
男生 | 65 | ||
女生 | 55 | ||
合计 | 110 | 200 |
(2)现有n
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5e07bf129b073f37b553fbca100172.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
(ii)求证:这n根绳子恰好能围成一个圈的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f34a85a61fcc926833ed2775f376541.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c1698cf3a31568a8ff6f6d4ee280e8.png)
0.100 | 0.050 | 0.025 | 0.010 | |
k | 2.706 | 3.841 | 5.024 | 6.635 |
您最近一年使用:0次