1 . 等差数列
的前
项和为
,
(
且
),
.
(1)求
的通项公式与前
项和
;
(2)记
,当
,
时,试比较
与
的大小;
(3)若
,正项等比数列
中,首项
,数列
是公比为4的等比数列
,且
,求
的通项公式与
.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3c9f09e932ad3cc1f3720d93b34c56.png)
(1)求
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dcf4e0dd72f254d9eab961b892ae9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15520cf5be7c2685975aac51bc99ac4f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afef6271af7462ffa935a1846e3ec90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ba85f74cda4ddd621278e558bc036f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ee3a47bf7dfe538ae367cc006a69b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea2efac902bfb513a224c40faef2516.png)
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2 . 用篱笆在一块靠墙的空地围一个面积为
的等腰梯形菜园,如图所示,用墙的一部分做下底
,用篱笆做两腰及上底,且腰与墙成
,当等腰梯形的腰长为多少时,所用篱笆的长度最小?并求出所用篱笆长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8fbf64cd29a08ae703e9fa2035f3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
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解题方法
3 . 多年统计数据表明如果甲、乙两位选手在决赛中相遇,甲每局比赛获胜的概率为
,乙每局比赛获胜的概率为
.本次世界大赛,这两位选手又在决赛中相遇.赛制为五局三胜制(最先获得三局胜利者获得冠军).
(1)现在比赛正在进行,而且乙暂时以
领先,求甲最终获得冠军的概率;
(2)若本次决赛最终甲以
的大比分获得冠军,求甲失分局序号之和
的分布列和数学期望.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)现在比赛正在进行,而且乙暂时以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124656394b0674aa1266ba4760bc602f.png)
(2)若本次决赛最终甲以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1dcdac71e394e495d069f64e1f1ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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3卷引用:河南省濮阳市2024届高三第三次模拟考试数学试题
4 . 已知椭圆C的标准方程为
,梯形
的顶点在椭圆上.
(1)已知梯形
的两腰
,且两个底边
和
与坐标轴平行或在坐标轴上.若梯形一底边
,高为
,求梯形
的面积;
(2)若梯形
的两底
和
与坐标轴不平行且不在坐标轴上,判断该梯形是否可以为等腰梯形?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)已知梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
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2卷引用:海南省2022-2023学年高二下学期学业水平期中考试数学试题
5 . 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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6 . 已知
,
,平面内动点P满足
.
(1)求动点P的轨迹C的方程;
(2)动直线
交C于A、B两点,O为坐标原点,直线
和
的倾斜角分别为
和
,若
,求证直线
过定点,并求出该定点坐标;
(3)设(2)中定点为Q,记
与
的面积分别为
和
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d195911a91d12edd5685f6cd963fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743eac5ef7cd9452d9678d797da748ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb18941b1e55e62e6c3f54a35ccb214.png)
(1)求动点P的轨迹C的方程;
(2)动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f478abeeb4da23121b652cf907972d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)设(2)中定点为Q,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592f84fbbd939b954f52dc6b8c009b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51aab5c5e99207337fb64603887579c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d40a97fd767e95f34f3b91ab8d84c.png)
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解题方法
7 . 若实数集
对
,均有
,则称
具有Bernoulli型关系.
(1)若集合
,判断
是否具有Bernoulli型关系,并说明理由;
(2)设集合
,若
具有Bernoulli型关系,求非负实数
的取值范围;
(3)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2df79c96894e48585d810e2d1180b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de62c03953e609ea331280b1e27ba701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42acae4bf2a6bead9d904b70d0480fc0.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5055c43ef4c493c056609f617f38e108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef4609431a6fc9f2755d8e8ca6617b0.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9d408eb7f234bea73e86bff6a453f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5596a9fe31bffbe73af20f611a9a574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953916e76840b10bf27302f42ad98cb9.png)
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3卷引用:福建省福州市2024届高三第三次质量检测数学试题
名校
8 . 医生将一瓶含量
的A药在
内匀速注射到患者的血液中称为A药的一次注射.在注射期间,患者血液中A药的注入量
与注射用时
的关系是
,当
时,血液中的A药注入量达到
,此后,注入血液中的A药以每小时
的速度减少.
(1)求k的值;
(2)患者完成A药的首次注射后,血液中A药含量不低于
的时间可以维持多少h?(精确到0.1)
(3)患者首次注射后,血液中A药含量减少到
时,立即进行第二次注射,首次注射的A药剩余量继续以每小时
的速度减少,已知注射期间能保持患者血液中的A药含量不低于
,那么,经过两次注射,患者血液中A药的含量不低于
的时间是否可以维持
?(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6166f7681e270129d99529fdc7b322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e55972b2faab535d8470e6e993bbac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e507b39e0e16c42298cf90eb69118d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a376791a014497632cd7435dc83f4e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052868bae87b7086d81bcc7bb05202b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2a8a5dfe5744b40d42c415cad389ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6166f7681e270129d99529fdc7b322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f733b1ceeead9ff892539d46a23f3626.png)
(1)求k的值;
(2)患者完成A药的首次注射后,血液中A药含量不低于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7c81d9eb2cdfd77d259c8d595396f7.png)
(3)患者首次注射后,血液中A药含量减少到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7c81d9eb2cdfd77d259c8d595396f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f733b1ceeead9ff892539d46a23f3626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7c81d9eb2cdfd77d259c8d595396f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7c81d9eb2cdfd77d259c8d595396f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a122145842f975fa8dd6f6cd94ba85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669d9f8710ff42552ce0c99dff29703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e5aecc7c32f46bc083030629cdd81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a0b786ff5eb5515b597d5e1d46cac9.png)
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127次组卷
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3卷引用:湖南省益阳市2023-2024学年高一上学期期末考试数学试题
解题方法
9 . 对于数列
,若存在
,使得对任意
,总有
,则称
为“有界变差数列”.
(1)若各项均为正数的等比数列
为有界变差数列,求其公比q的取值范围;
(2)若数列
满足
,且
,证明:
是有界变差数列;
(3)若
,
均为有界变差数列,且
,证明:
是有界变差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b12bed9580c9e3efaaae3f234780cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若各项均为正数的等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b22febb1e578366695d7628740370bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7c13436fc942bddb9c562520fb855a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc883e0a2ee951e94f305c807e66010a.png)
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10 . 树人中学高三(1)班某次数学质量检测(满分150分)的统计数据如下表:
在按比例分配分层随机抽样中,已知总体划分为2层,把第一层样本记为
,其平均数记为
,方差记为
;把第二层样本记为
,其平均数记为
,方差记为
;把总样本数据的平均数记为
,方差记为
.
(1)证明:
;
(2)求该班参加考试学生成绩的平均数和标准差(精确到1);
(3)假设全年级学生的考试成绩服从正态分布
,以该班参加考试学生成绩的平均数和标准差分别作为
和
的估计值.如果按照
的比例将考试成绩从高分到低分依次划分为
四个等级,试确定各等级的分数线(精确到1).
附:
.
性别 | 参加考试人数 | 平均成绩 | 标准差 |
男 | 30 | 100 | 16 |
女 | 20 | 90 | 19 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ae6558e11384a40f3a338b73385ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbe7f95b5d89f9409ec24536da9e826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbc29b47b83fdc5368770b7b1acb439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b3107354f055c708208a37ab66b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb525270c748eddaaecc4a549cca250e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1295cbd36fdc55a55b549aa2dd5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671f43c79d612c93a6d160335e86e177.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217223e16eb491561c4ca844c0b52f81.png)
(2)求该班参加考试学生成绩的平均数和标准差(精确到1);
(3)假设全年级学生的考试成绩服从正态分布
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcc248a7770a16fa10fc4602d71e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0ad7e7853a069537387b5192f73844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb65fd949bae6f2d638b4b7a67aaa75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53bcf5dca65c16335bc356bcd5a36ef.png)
您最近一年使用:0次
2024-04-26更新
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2052次组卷
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5卷引用:广东省广州市广东实验中学2023-2024学年高三下学期教学情况测试(二)数学试卷A