名校
解题方法
1 . 已知数列
中,
,设
为
前
项和,
,已知数列
,设
的前
项和
.
(1)求
;
(2)若
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73af653d11c3d6c2673300a6622a5279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d3d55a85012933f91c5d8d27d8801d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4f2c7992392f3e89a243767109c674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知函数
在定义域
上为偶函数,并且函数
.
(1)判断
的奇偶性,并证明你的结论;
(2)设
,若对任意的
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152043781d916de477d7611cb683a67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c379c978805211415624917ef4c2c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494ca37214184b7f655c7810851d3b72.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8336841b5bc3cb4913835080b9d85933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f9d255ca420fa2486b11fcb7763b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204e6006eacca1a448fe6991f3c121f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bc85e19745af6992cbb72c3fd79ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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解题方法
3 . 设
是定义在
上的奇函数,且对任意实数
,恒有
,当
时
.
(1)求证:
是周期函数;
(2)当
时,求
的解析式;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d78dec1c1e00ec02d7bdaf76ef8901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3262781afb71e9dffc0b7fa1fe280cb2.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad814089e37543b2f547af9ae75b6dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f4d3928111ed08cff652ace4e94ae8.png)
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解题方法
4 . 在
中,内角A,B,C所对的边分别为a,b,c,且
.
(1)求角A的大小;
(2)若
为锐角三角形,点F为
的垂心,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637e02b1ce2b9a2722eb149038463627.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495be6a6b940e8affe38f2bcdee246b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f13028f0da99d1282256123bf853a38.png)
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2024-06-14更新
|
1105次组卷
|
2卷引用:辽宁省大连市第十二中学2023-2024学年高一下学期6月份学情反馈数学试卷
名校
5 . 设函数
.
(1)求曲线
在点
处的切线方程;
(2)求
在
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9105a669bf206ed48ecae57fac46cd83.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8dc29afaa48c860fe7fbee5b5c6197.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b743ba0b998860bb9586d8c983e45baf.png)
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2024-06-11更新
|
865次组卷
|
4卷引用:辽宁省大连市第十二中学2023-2024学年高二下学期6月份学情反馈数学试卷
名校
解题方法
6 . 大连育明高级中学高三学生在交流2016年全国新课标Ⅲ卷单选压轴题时,各抒己见展示各自的解法.
题干:定义“规范01数列”
如下:
共有
项,其中
项为0,
项为1,且对任意
,
中0的个数不少于1的个数.若
,则不同的“规范01数列”共有[14]个.
A同学发现数据较少,可以列出所有情况,得到14个;
B同学在组合数学中学过卡特兰数,
,所以此题是
的情况,
.
在一次活动课上,甲、乙俩人设计了一个游戏,抛硬币一次,若正面向上加一分,反面向上减一分.若起始分为零分,出现负分游戏立刻停止.
(1)求在一次游戏中,恰好在第十一次后结束,中途只出现过两次零分的概率;
(2)如果一个人在一次游戏中,连续抛了十次硬币,求此时积分
的分布列和期望;
(3)参与一次游戏,记总共抛硬币次数为
,
的期望为
,求满足
的最小正整数
.
题干:定义“规范01数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc07a2896f77eeb801584bcd92ff3791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1232cb61b815cee8d87cf779d1d1cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
A同学发现数据较少,可以列出所有情况,得到14个;
B同学在组合数学中学过卡特兰数,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fefd8e0dbfaac6f95c73ab1bde1072d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c50c49328f9660f9b52aaad6794792.png)
在一次活动课上,甲、乙俩人设计了一个游戏,抛硬币一次,若正面向上加一分,反面向上减一分.若起始分为零分,出现负分游戏立刻停止.
(1)求在一次游戏中,恰好在第十一次后结束,中途只出现过两次零分的概率;
(2)如果一个人在一次游戏中,连续抛了十次硬币,求此时积分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(3)参与一次游戏,记总共抛硬币次数为
![](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/61b794ca545ebe0099d3e036a859fd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069dfb6ecc2aa5803a2a45077468f68c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e392113d640a1d6709a6624ed10c1b.png)
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7 . 已知一圆形纸片的圆心为
,直径
,圆周上有
两点.如图:
,
,点
是
上的动点.沿
将纸片折为直二面角,并连接
,
,
,
.
平面
时,求
的长;
(2)若
,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81cbbac19ce207b72c990195854f6fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d613f1efe4884746e4937fa0928dcce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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解题方法
8 . 四边形ABCD为平行四边形,
,点M,N满足
,
.
,求
的值;
(2)若
,且
,点P是边AD上的动点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecb91d19a693299dcdad4059b6237a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aff459d6f6f3ebd003d6c830b33b2f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f06233da1e067a94c5abfeeee6dcdbf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8ea703abfa6d8fb4eac0a39ec8192a.png)
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解题方法
9 . 设数列
满足:①
;②所有项
;
③
.设集合
,将集合
中的元素的最小值记为
.换句话说,
是数列
中满足不等式
的所有项的项数的最小值.我们称数列
为数列
的伴随数列.例如,数列1,3,5的伴随数列为1,2,2,3,3.
(1)请写出数列1,5,7的伴随数列;
(2)设
,求数列
的伴随数列
的前30项之和;
(3)若数列
的前
项和
(其中
常数),求数列
的伴随数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b614e06663d93a618d95f416e35af54.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd992f0b72c282959031890e58c7810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1290895db96907d5054c7cc8ab2f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63cad0f23354aa754ade482d849557fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)请写出数列1,5,7的伴随数列;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb2f1272b626e0fd5c79c1a91d48b07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7051ba2351ffb1a1900f931833054bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c320a0619c63a5b650a1a94c0a5679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e74be91bfe4bc209da7539dbf9b72c.png)
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10 . 某校开展“阳光体育节”活动,其中传统项目“定点踢足球”深受同学们喜爱.比赛规则为:甲、乙两人轮流进行足球定点踢球比赛(每人各踢一次为一轮),在相同的条件下,每轮甲、乙两人在同一位置,甲先踢,每人踢一次球,两人有1人命中,命中者得1分,未命中者得
分;两人都命中或都未命中,两人均得0分,设甲每次踢球命中的概率为
,乙每次踢球命中的概率为
,且各次踢球互不影响.
(1)经过1轮踢球,记甲的得分为
,求
的数学期望;
(2)若经过
轮踢球,用
表示经过第
轮踢球累计得分后乙得分高于甲得分的概率.
①求
,
,
;
②规定
,且有
,请根据①中
,
,
的值求出A、
,并求出数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)经过1轮踢球,记甲的得分为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)若经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ba4e6b48109ec9e10138da17e82aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c607987b73502db63f77c9799f4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8790e22ceceab5921b32cb8602cdb71.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
②规定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20dad8f0179ff7293905f1c89ab7d813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06646651ac4ec8b20e091f839a19a405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
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