真题
解题方法
1 . 我们把由半椭圆
与半椭圆
合成的曲线称作“果圆”,其中
,
,
.如图,设点
是相应椭圆的焦点,
和
分别是“果圆”与x,y轴的交点,M是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/86546566-5bb2-42d3-9735-4d8d054ef6a5.png?resizew=192)
(1)若
是边长为1的等边三角形,求“果圆”的方程;
(2)设P是“果圆”的半椭圆
上任意一点.求证:当
取得最小值时,P在点
或
处;
(3)若P是“果圆”上任意一点,求
取得最小值时点P的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13068aa6d4e3a155d14a2bfd7ab413e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1173f3888e73861665d62df65ee00510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671241e869118e81afc8cc427d24fe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba42765dc0f7cba7d6dacb161ef900b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182d920d6e40db2b143837fec2287351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/86546566-5bb2-42d3-9735-4d8d054ef6a5.png?resizew=192)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c2bfe459cac775a7b0d09b612de84f.png)
(2)设P是“果圆”的半椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1173f3888e73861665d62df65ee00510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a92b933377ae3453fb36a171c521c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(3)若P是“果圆”上任意一点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a92b933377ae3453fb36a171c521c7.png)
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2 . 如果有穷数列
(m为正整数)满足条件
,即![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d58e15de1b07667b44bb0e187d43965.png)
,我们称其为“对称数列”.例如,数列1,2,5,2,1与数列8,4,2,2,4,8都是“对称数列”.
(1)设
是项数为7的“对称数列”,其中
是等差数列,且
.依次写出
的每一项;
(2)设
是49项的“对称数列”,其中
是首项为1,公比为2的等比数列,求
各项的和S;
(3)设
是100项的“对称数列”,其中
是首项为2,公差为3的等差数列.求
前n项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f42beacb05b4e0ef7bc5054d963657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd77932c26ce24576308c4ed4ffaff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d58e15de1b07667b44bb0e187d43965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c410d893ae9b389262bcd6553ed02bbe.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a447e5baee4f7518706498d4aca7553b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37315fc505a5be225c5b2d0aa3f5025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88f01c3f7abc6fb390b5f9bcbeef700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d717398566e4a7769dc4bb6865195f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45404a6c16a16968629c5e03a3fcdbc4.png)
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3卷引用:2007年普通高等学校招生考试数学(文)试题(上海卷)
3 . 在正四棱锥
中,
,直线PA与平面ABCD所成的角为
,求正四棱锥
的体积V.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/1b22a08c-c920-4434-b650-2031a3691fbc.png?resizew=183)
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真题
4 . 设是二次曲线C上的点,且
构成了一个公差为
的等差数列,其中O是坐标原点.记
.
(1)若C的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f174fd94fbbaa6153157d6bf001724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec5aa21a4fe7170bf7265265de4fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4886535740a0f54ca39b882d433cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
(2)若C的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d83c1c494a901e6a225b1f36ad334c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)请选定一条除椭圆外的二次曲线C及C上的一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db4fe79b98486f0d4556f37d64d74f9.png)
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真题
解题方法
5 . 在以O为原点的直角坐标系中,点
为
的直角顶点.已知
,且点B的纵坐标大于零.
(1)求向量
的坐标;
(2)求圆
关于直线
对称的圆的方程;
(3)是否存在实数a,使抛物线
上总有关于直线
对称的两个点?若不存在,说明理由:若存在,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bbd0e3bbbd78cb0c9c89a3fb0fa872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3778760c9535d512b571e3595b1054.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
(2)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d613ee9702496da90575c4da33fd9cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(3)是否存在实数a,使抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64776ea38ff918d9330a27d780f809cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
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2卷引用:2003 年普通高等学校招生考试数学(文)试题(上海卷)
真题
6 . 已知平行六面体
中,
平面
.若
,直线
与平面
所成的角等于
,求平行六面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df57c20d99b9f82308c0f329bc892009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244570a66057bec1ef88d7a4093ebd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105829462949888/3105969032503296/STEM/d7f9083b76fd450bb599cfa63fefe423.png?resizew=205)
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2卷引用:2003 年普通高等学校招生考试数学(文)试题(上海卷)
7 . 规定
,其中
,m是正整数,且
,这是组合数
(n,m是正整数,且
)的一种推广.
(1)求
的值.
(2)组合数的两个性质:①
;②
是否都能推广到
(
,m是正整数)的情形?若能推广,则写出推广的形式并给出证明;若不能,则说明理由;
(3)已知组合数
是正整数,证明:当
,m是正整数时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb198e953966f9cfafa7b64c9eae01b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24385caa0783ae951c6b8672780a37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7707aba7b9fed2c8e4704b82ce09087a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870c36161f465fc992534b5fc3777f3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc62f65eb9457e5317945ba710e4e3e4.png)
(2)组合数的两个性质:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28358a9b687fea8091fb586066e149ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d1fe539d9b7d3acd8590a63955ee2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53be2a43f8495c6233ad63874bfa1935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(3)已知组合数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7707aba7b9fed2c8e4704b82ce09087a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcfabd204011274ad9908d528944107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d594e712f51061279baee1da7d40242c.png)
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13卷引用:2002年普通高等学校招生考试数学(理)试题(上海卷)
2002年普通高等学校招生考试数学(理)试题(上海卷)上海市曹杨中学2022-2023学年高二下学期期末数学试题(已下线)第六章 计数原理(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第二册)上海市进才中学2023-2024学年高二下学期3月月考数学试题上海市位育中学2023-2024学年高二下学期3月月考数学试卷上海市奉贤中学2023-2024学年高二下学期3月月考数学试卷沪教版(2020) 一轮复习 堂堂清 第九单元 9.2 排列与组合(已下线)6.2.3-6.2.4 组合 组合数(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第三册)(已下线)专题04 分类讨论型【讲】【通用版】(已下线)第六章 计数原理(压轴题专练)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第三册)(已下线)专题01 两个计数原理与排列组合(7类压轴题型)-【常考压轴题】2023-2024学年高二数学压轴题攻略(人教A版2019选择性必修第三册)(已下线)模块五 专题5 全真拔高模拟5(已下线)专题03 计数原理(6大考点经典基础练+优选提升练)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(新高考专用)
真题
8 . 如图,在直三棱柱
中,
,D是线段
的中点,P是侧棱
上的一点,若
,求
与底面
所成角的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5a4a2b890cc93fdb9800915722fdbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70af2f51dc114eb028b11835485d5fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb930d50f09942ab726441e5aa1d1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/d83eed73-30d6-4235-9c7e-0e791dfb7169.png?resizew=150)
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2卷引用:2002年普通高等学校招生考试数学(理)试题(上海卷)
真题
解题方法
9 . 已知复数和
,其中
均为实数,i为虚数单位,且对于任意复数z,有
.
(1)试求m的值,并分别写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33101c0ba719d80774cbcd6893bce713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a163c87c6eef71953b1b4d9e06d3d260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e088ba0228e35b518cd46a14ae3dcc3d.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
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真题
10 . 在
平面上有一点列
,对每个自然数
,点
位于函数
的图象上,且点
,点
与点
构成一个以
为顶点的等腰三角形.
(1)求点
的纵坐标
的表达式;
(2)若对每个自然数
,以
,
,
为边长能构成一个三角形,求
取值范围;
(3)设
,若
取(2)中确定的范围内的最小整数,求数列
前多少项的和最大?试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba46d196fdd451c9be9a0839ee65320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cff09ae08c9412afc2940861a552738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae3a88c614758672f5d2f2149236476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9264ace0f81ad6261b83c6777722ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)若对每个自然数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95931effbd59c43e8ed1ea09962b84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a61a13583a33aea4b957969b35f858f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0915838d1d1adf85df96617ce5eb8f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73c9784b04f13eef294b998f4d6d00f.png)
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