解题方法
1 . “对称性”是一个广义的概念,包含“几何对称性”、“置换对称性”等范畴,是数学之美的重要体现.假定以下各点均在第一象限,各函数的定义域均为
.设点
,
,
,规定
,且对于运算“
”,
表示坐标为
的点.若点U,V,W满足
,则称V与U相似,记作V~U.若存在单调函数
和
,使得对于
图像上任意一点T,
均在
图像上,则称
为
的镜像函数.
(1)若点
,
,且N~M,求
的坐标;
(2)证明:若
为
的镜像函数,
,则
;
(3)已知函数
,
为
的镜像函数.设R~S,且
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf145ba1997cc3d08e33f293254e6f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2795f6fc7043f930745976968466fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde4ec543a9f0c90361dc745f44803d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e472c830f937c5b6d170697b57104d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3be375f2101d25d3cb0918bf65b682b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544f91d4fb22c571db9f8481b72a0419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd2ac83d16c87fcc7056e4c6dbbff36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661249bf6499017f9e5e03db3fcd93d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643cf4c0177c40edaf01e676c1d54c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5083e04454a558782d3bcbd2cabdde26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd2ac83d16c87fcc7056e4c6dbbff36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544f91d4fb22c571db9f8481b72a0419.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2595e01e8751886a27862cce04e2d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b925f9f6da6b75ee413e4de5701855a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7dad535985c70409e9c799c559386b.png)
(2)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e468e814daa94be212832da87ca2432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8569e7b5710b68a93b65b8930415b8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9716315555c1c3facc71023e6e1c75b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162768e1de8cab5e6e19b748a47b2216.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c945a45ca2e036019d017d2bec45d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8195f5ae98c4c40ff17aa510e39b46b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ebc9e30c1977652e8b9bfd6f10dc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd72ac36aedac2ba9271b332e59d33ce.png)
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名校
2 . 某校为了丰富课余活动,同时训练学生的逻辑思维能力,在高中三个年级举办中国象棋盲棋比赛,经过各年级初赛,高一、高二、高三分别有3人,4人,5人进入决赛,决赛采取单循环方式,即每名队员与其他队员都要进行1场比赛(每场比赛都采取5局3胜制,初赛、决赛的赛制相同,记分方式相同),最后根据积分选出冠军,积分规则如下:比赛中以3∶0或3∶1取胜的队员积3分,失败的队员积0分;而在比赛中以3∶2取胜的队员积2分,失败的队员积1分.
(1)从进入决赛的12人中随机抽取2人进行表演赛,这2人恰好来自不同年级的概率是多少?
(2)初赛时,高三甲、乙两同学对局,设每局比赛甲取胜的概率均为
,记甲以
取胜的概率为
,当
最大时,甲处于最佳竞技状态.在决赛阶段甲、乙对局,而且甲的竞技状态最好,求甲所得积分
的分布列及期望.
(1)从进入决赛的12人中随机抽取2人进行表演赛,这2人恰好来自不同年级的概率是多少?
(2)初赛时,高三甲、乙两同学对局,设每局比赛甲取胜的概率均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fed1be8b7e50f18cb90077d9fce8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84783b6ba0f36789519816101a437f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1f109f79547d6ae0d94339e689e8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1f109f79547d6ae0d94339e689e8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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2024-04-14更新
|
1467次组卷
|
4卷引用:湖北省汉阳县部分学校2024届高三下学期模拟考试数学试题
湖北省汉阳县部分学校2024届高三下学期模拟考试数学试题湖北省荆州市沙市中学2024届高三下学期高考全真模拟数学试卷(已下线)第七章 随机变量及其分布总结 第三课 汇总本章方法(已下线)数学(广东专用02,新题型结构)
解题方法
3 . 求解下列问题,
(1)若
恒成立,求实数k的最小值;
(2)已知a,b为正实数,
,求函数
的极值.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb1dd4abd9cb0d42cbd0be2146c03d7.png)
(2)已知a,b为正实数,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b58347ae89168dc23928819036fd524.png)
您最近一年使用:0次
解题方法
4 . 函数
图像与
轴的两交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b67a988eee36733f064546a4b232092.png)
(1)令
,若
有两个零点,求实数
的取值范围;
(2)证明:
;
(3)证明:当
时,以
为直径的圆与直线
恒有公共点.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c80e4cb0344c6e0c4541e86c5fb08a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b67a988eee36733f064546a4b232092.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9113131c37fe929112eab275820a1f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b725fdc8de9800f2692f6fea8585b1e9.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87ecc31822d729a45488d803fff4e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feac29c5d1c1bc3e6dd5ad931fbd332b.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3dcd81aeafbda57f23cdc852ab6c35a.png)
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解题方法
5 . 记
,若
,满足:对任意
,均有
,则称
为函数
在
上“最接近”直线.已知函数
.
(1)若
,证明:对任意
;
(2)若
,证明:
在
上的“最接近”直线为:
,其中
且为二次方程
的根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdddd6c3c0c0ef2c14c4ea7faf24e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699c5155f154bef4a75eb53a03f4291e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8908859073a35ccb07b25eb07d468185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf32da3779e82f7858c1f3c27a90dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc7121983d4ca0e328501601248eceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e207cf62e3a7e282eac4c4a3455bbf9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a1a493b667a18e55b835d2bd03ca4a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a40212b2b62489822575bf09e68ac8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92e918a76d99d245938076492d72f80.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d2168d7265787aa0eb475f56e3b32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c4b7add471e5d031b98f7c1fc71f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155c7f573e898da225390202da1767e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c9db16ab44b10eef1c151383757712.png)
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名校
解题方法
6 . 微积分的创立是数学发展中的里程碑,它的发展和广泛应用开创了向近代数学过渡的新时期,为研究变量和函数提供了重要的方法和手段.对于函数
在区间
上的图像连续不断,从几何上看,定积分
便是由直线
和曲线
所围成的区域(称为曲边梯形
)的面积,根据微积分基本定理可得
,因为曲边梯形
的面积小于梯形
的面积,即
,代入数据,进一步可以推导出不等式:
.
;
(2)已知函数
,其中
.
①证明:对任意两个不相等的正数
,曲线
在
和
处的切线均不重合;
②当
时,若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78e5de9b684beb1bafc89efd5af8b8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644ba16341e356b57ea153e840555290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb9e8df0db7e14434837c5ad77f27e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe83f1ae7e5f05d8bed6bf6f42db0e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e02b3995488ad13babd4eeb6f99c40e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe83f1ae7e5f05d8bed6bf6f42db0e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe83f1ae7e5f05d8bed6bf6f42db0e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b601337ff73bafe04fc3e40d0061fddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef73511ddedc2ab4b5bf17500554971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422f124d4c171787c292326b1d1c655c.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6c7daa90a08a84c1fe48d29ffe86e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe52e15d70c4355d101d333f8e6dc258.png)
①证明:对任意两个不相等的正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24a2c53e3b0b1c08803e95419f909d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecaca8409b3f51d22667a14559c58ea4.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d64909edca036b1463f214d977604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-03-13更新
|
1622次组卷
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4卷引用:湖北省七市州2024届高三下学期3月联合统一调研测试数学试题
湖北省七市州2024届高三下学期3月联合统一调研测试数学试题安徽省淮南第二中学2023-2024学年高二下学期期中教学检测数学试题(已下线)湖北省七市州2024届高三下学期3月联合统一调研测试数学试题变式题16-19湖南省长沙市周南中学2024 届高三下学期第二次模拟考试数学试题
名校
7 . 在几何学常常需要考虑曲线的弯曲程度,为此我们需要刻画曲线的弯曲程度.考察如图所示的光滑曲线C:
上的曲线段
,其弧长为
,当动点从A沿曲线段
运动到B点时,A点的切线
也随着转动到B点的切线
,记这两条切线之间的夹角为
(它等于
的倾斜角与
的倾斜角之差).显然,当弧长固定时,夹角越大,曲线的弯曲程度就越大;当夹角固定时,弧长越小则弯曲程度越大,因此可以定义
为曲线段
的平均曲率;显然当B越接近A,即
越小,K就越能精确刻画曲线C在点A处的弯曲程度,因此定义
(若极限存在)为曲线C在点A处的曲率.(其中y',y''分别表示
在点A处的一阶、二阶导数)
(2)求椭圆
在
处的曲率;
(3)定义
为曲线
的“柯西曲率”.已知在曲线
上存在两点
和
,且P,Q处的“柯西曲率”相同,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505d83f4d34a8cd385577a6ce93a4b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea61ddc41f927684c6dfaacdd7f8e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0636a11a086df66133bd50e43481a546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427eceadd7bb569ff140ea73d650db1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0636a11a086df66133bd50e43481a546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea61ddc41f927684c6dfaacdd7f8e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92877ce3543f19dc565dbeff9777ecc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505d83f4d34a8cd385577a6ce93a4b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a6ffded1e8b3dd5ef03b57aa2beacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
(2)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a345c0ab9bc098efa03e17ea556fcb.png)
(3)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117c39fe1b37a6862ad0e46282488210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6004e46d022f4976a52dc949691da232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75def50794f0b3c42765b1e43334fcd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0cc87bade827b694da4e6e5c020eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7add187842d3ee824ed3a501f392735f.png)
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2024-01-29更新
|
3082次组卷
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8卷引用:湖北省武汉市武钢三中2024届高三下学期开学考试数学试题
湖北省武汉市武钢三中2024届高三下学期开学考试数学试题浙江省宁波市镇海中学2024届高三上学期期末数学试题(已下线)第四套 九省联考全真模拟(已下线)压轴题函数与导数新定义题(九省联考第19题模式)练(已下线)新题型01 新高考新结构二十一大考点汇总-3(已下线)微考点2-5 新高考新试卷结构19题压轴题新定义导数试题分类汇编湖南省长沙外国语学校2023-2024学年高二下学期3月月考数学试题山东省菏泽市定陶区第一中学2023-2024学年高二下学期第一次月考数学试题
名校
8 . 有一位老师叫他的学生到麦田里,摘一颗全麦田里最大的麦穗,期间只能摘一次,并且只可以向前走,不能回头.结果,他的学生两手空空走出麦田,因为他不知前面是否有更好的,所以没有摘,走到前面时,又发觉总不及之前见到的,最后什么也没摘到.假设该学生在麦田中一共会遇到
颗麦穗(假设
颗麦穗的大小均不相同),最大的那颗麦穗出现在各个位置上的概率相等,为了使他能在这些麦穗中摘到那颗最大的麦橞,现有如下策略:不摘前
颗麦穗,自第
颗开始,只要发现比他前面见过的麦穗都大的,就摘这颗麦穗,否则就摘最后一颗.设
,该学生摘到那颗最大的麦穗的概率为
.(取
)
(1)若
,
,求
;
(2)若
取无穷大,从理论的角度,求
的最大值及
取最大值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f5be952cd4b2844b21df7cad1e3d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b00f4eb7f1bd2ccefbabf0c1dfa8f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd266684a38a50f7a7925d4bb5e63e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40de5f0592b95bc8b0e9560eae5bad8d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-12-19更新
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5卷引用:湖北省部分学校2024届高三上学期12月联考数学试题
名校
9 . 已知
,曲线
:
与
:
没有公共点.
(1)求
的取值范围;
(2)设一条直线与
,
分别相切于点
,
.证明:
(i)
;
(ⅱ)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cd0ce93b5e667e626905ea50de73e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c487f5facded553b286d0b85a2167388.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设一条直线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4d5ca4e251ff0e503a26f9a7375326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5823e0c6dd1b7a6ff42d4ff521cc0366.png)
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84e93cfb5a81127f97271af803f8de0.png)
(ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e118c9e921bb7ab8720174df658f499.png)
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解题方法
10 . 2023年10月5日晚,杭州亚运会女篮决赛的巅峰对决中,中国女篮以
战胜日本女篮,成功卫冕亚运会冠军,大快人心,表现神勇,为国家和人民争了光.某校随即开展了“学习女篮精神,塑造健康体魄”的主题活动,在该活动的某次篮球训练课上,进行了一场
、
、
3名女篮队员的传接球的训练,球从
手中开始,等可能地随机传向另外2人中的1人,接球者接到球后再等可能地随机传向另外2人中的1人,如此不停地传下去,假设传出的球都能被接住.记第
次传球之前球在
手中的概率为
,易知
,
.
(1)①求第5次传球前,球恰好在
手中的概率
;
②第
次传球前球在
手中的概率为
,试比较
与
的大小.
(2)训练结束,体育老师为了表扬队员们精彩的表现和取得的进步,组织了一场“摸球抽奖”活动,先在一个口袋中装有
个红球(
且
)和5个白球,一次摸奖从中摸两个球,两个球颜色不同则为中奖.若设三次摸奖(每次摸奖后球放回)恰好有一次中奖的概率
,当
取何值时,
最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759e247c4e420e77aedfcb89fed71098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5359c8fdc022d7044ffb6fdb291666.png)
(1)①求第5次传球前,球恰好在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
②第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fe44dab672c37b60f97de0040be87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c50b5f75c050e3b40f1e35fdc114e.png)
(2)训练结束,体育老师为了表扬队员们精彩的表现和取得的进步,组织了一场“摸球抽奖”活动,先在一个口袋中装有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d0a73f50b3e4583f1c1b6d6bf0d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2023-11-09更新
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1603次组卷
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5卷引用:湖北省部分重点中学2024届高三上学期第一次联考数学试题
湖北省部分重点中学2024届高三上学期第一次联考数学试题江苏省南京市金陵中学2024届高三上学期期末模拟数学试题(已下线)第4讲:概率与数列的结合问题【练】(已下线)【一题多变】传球问题 构造数列浙江省宁波市北仑中学2023-2024学年高二下学期期中考试数学试题