1 . 已知函数
,设曲线
在点
处的切线与x轴的交点为
,其中
为正实数.
(1)用
表示
;
(2)求证:对一切正整数n,
的充要条件是
;
(3)若
,记
证明数列
成等比数列,并求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7b0deaff280ebbee0f91be5acd20d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641fec779880f75fa8ee6782f3350402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edeb4aa8a3ca0261e0161fd7fa8bde97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002f56900c2924bfd79fc3865b0a02e.png)
(2)求证:对一切正整数n,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b3c80e774501722f46f97800f1d400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3fd5fd833041ae95d8b7f8d2897e35.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4223bd6ee8f82d59d244371fbcddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfe65f891c54780bcf1ed6a9f8a0f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
您最近一年使用:0次
2022-11-23更新
|
1077次组卷
|
3卷引用:2007年普通高等学校招生考试数学(理)试题(四川卷)
真题
解题方法
2 . 已知m,n为正整数.
(1)用数学归纳法证明:当
时,
;
(2)对于
,已知
,求证
,
;
(3)求满足等式
的所有正整数n.
(1)用数学归纳法证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3e5be1796493161a4df7e28a6f6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d201fdbbff12486f31b5688fc0a0747e.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831608f09609c37f757f5bfcd01253f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186c794ebbde3237056af29cb97778f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c70b3e66c0852233e54c1ba772fa97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91f85fc4d2f3894351dd2c4d4f5c975.png)
(3)求满足等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a4cace6fc5c0f94904a33a643adadf.png)
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2022-11-09更新
|
1343次组卷
|
4卷引用:2007年普通高等学校招生考试数学(理)试题(湖北卷)
2007年普通高等学校招生考试数学(理)试题(湖北卷)江苏省苏州市吴中区2018-2019学年高二下学期期中数学(理)试题(已下线)专题1 数学归纳法及其变种 微点1 数学归纳法(已下线)第二篇 函数与导数专题4 不等式 微点2 伯努利不等式
真题
解题方法
3 . 如图,椭圆的长轴
与x轴平行,短轴
在y轴上,中心为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3ed9fd99-c37e-4477-bfd6-d8eb42e17367.png?resizew=293)
(1)写出椭圆的方程,求椭圆的焦点坐标及离心率;
(2)直线
交椭圆于两点
;直线
交椭圆于两点
,
.求证:
;
(3)对于(2)中的中的在
,
,
,
,设
交
轴于
点,
交
轴于
点,求证:
(证明过程不考虑
或
垂直于
轴的情形)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc9076974ebd6331d67055302be8167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e395571ff5d1ea9ea8ceb06522211f89.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3ed9fd99-c37e-4477-bfd6-d8eb42e17367.png?resizew=293)
(1)写出椭圆的方程,求椭圆的焦点坐标及离心率;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e9c4ea393bbf064453e91f4800f967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f8af9ce5d927e6f422de42ead6ffb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060ffc86c94a526d4d1086e5590a4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea915b7c0562b239ea553b9ed2f9897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6318191342aedeaeeddb0f259ed759b3.png)
(3)对于(2)中的中的在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15abfafc59b6f9f01f3be4db4df797d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
4 . 如图,AB是圆O的直径,点C是圆O上异于A,B的点,直线PC⊥平面ABC,E,F分别是PA,PC的中点.
(1)记平面BEF与平面ABC的交线为l,试判断直线l与平面PAC的位置关系,并加以证明;
(2)设(1)中的直线l与圆O的另一个交点为D,且点Q满足
.记直线PQ与平面ABC所成的角为θ,异面直线PQ与EF所成的角为α,二面角E﹣l﹣C的大小为β.求证:sinθ=sinαsinβ.
(1)记平面BEF与平面ABC的交线为l,试判断直线l与平面PAC的位置关系,并加以证明;
(2)设(1)中的直线l与圆O的另一个交点为D,且点Q满足
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202594816/STEM/fe360ef4630f4137844de7807a4b52b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/29f8132e-d52b-4bb3-be15-39727acee098.png?resizew=195)
您最近一年使用:0次
2016-12-03更新
|
2777次组卷
|
4卷引用:2013年普通高等学校招生全国统一考试理科数学(湖北卷)
真题
5 . 如图,过抛物线y2=2PX(P>0)的焦点F的直线与抛物线相交于M、N两点,自M、N向准线L作垂线,垂足分别为M1、N1
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/3792bcf5-5698-4819-b16f-db62ea5671fa.png?resizew=140)
(Ⅰ)求证:FM1⊥FN1:
(Ⅱ)记△FMM1、、△FM1N1、△FN N1的面积分别为
,试判断S22=4S1S3是否成立,并证明你的结论.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/3792bcf5-5698-4819-b16f-db62ea5671fa.png?resizew=140)
(Ⅰ)求证:FM1⊥FN1:
(Ⅱ)记△FMM1、、△FM1N1、△FN N1的面积分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4e20ea341827ce5f9552daee39462.png)
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6 . 如图,直线
与直线
之间的阴影区域(不含边界)记为
,其左半部分记为
,右半部分记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/5ea293b0-aa12-40f1-b1e6-802fd9973139.png?resizew=163)
(1)分别用不等式组表示
和
;
(2)若区域
中的动点
到
的距离之积等于
,求点
的轨迹
的方程;
(3)设不过原点
的直线
与(2)中的曲线
相交于
两点,且与
分别交于
两点.求证
的重心与
的重心重合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2f99fee759b608a8f448d99d221171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df7b3f985f80216134feed07422c9e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eaa137a2290a9a9ec7ad635d17dbb6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/5ea293b0-aa12-40f1-b1e6-802fd9973139.png?resizew=163)
(1)分别用不等式组表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eaa137a2290a9a9ec7ad635d17dbb6.png)
(2)若区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd180baa7212528480ce32f2fda8960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)设不过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237c115d5b39d761e1cbcae031070b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10904093548255b8b1a7cb6ce712c240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2891d9f9d1843f129b96ccb6808e4bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2240b688ffb2cb0da2530940bd3aa4d1.png)
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2022-11-10更新
|
479次组卷
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2卷引用:2005年普通高等学校招生考试数学(文)试题(北京卷)
真题
7 . 已知
是等差数列,
是公比为q的等比数列,
,
,记
为数列
的前n项和.
(1)若
(m,k是大于2正整数),求证:
;
(2)若
(i是某一正整数),求证:q是整数,且数列
中每一项都是数列
中的项;
(3)是否存在这样的正数q,使等比数列
中有三项成等差数列?若存在,写出一个q的值,并加以说明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fe0f4e8a80a2840c0f6929a8a6351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf92b5d061e45e1c720cdf93409ae75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fa1d84e33943f4947d4dec19f80f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce13be3cf67126a906396ba8ca32721.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac52d20d7bb3a6631f5035ef18b64c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)是否存在这样的正数q,使等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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真题
名校
8 . 对任意一个非零复数z,定义集合
.
(1)设a是方程
的一个根,试用列举法表示集合
.若在
中任取两个数,求其和为零的概率P;
(2)设复数
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d211335e45fc37e1898566f1ea79378e.png)
(1)设a是方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4386deaa5b968ee921a1866e80f62e65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f71f1db49c0863ea542fedcd3c34d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f71f1db49c0863ea542fedcd3c34d4.png)
(2)设复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1094167b999b7140c6bf39fde9ea6edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2fb9b94e565dcc9e9b800ba54448ae.png)
您最近一年使用:0次
2022-11-09更新
|
857次组卷
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5卷引用:2001年普通高等学校招生考试数学(理)试题(上海卷)
2001年普通高等学校招生考试数学(理)试题(上海卷)5.2复数的四则运算 测试卷-2022-2023学年高一数学北师大版(2019)必修第二册(已下线)第九章 复数(压轴题专练)-单元速记·巧练(沪教版2020必修第二册)(已下线)7.2.2复数的乘、除运算——课后作业(提升版)(已下线)压轴题06向量、复数压轴题16题型汇总-1
9 . 已知数列
满足
,
.
(1)求数列
的通项公式;
(2)若数列
满足
,证明
是等差数列;
(3)证明:
.
![](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/ec788e71f2ffaeb588906e450242653c.png)
(1)求数列
![](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/aac6822ecd9f8a2832515d60fc53c7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7279fb526ec80f92715ecc00155e2e5f.png)
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2022-11-12更新
|
1692次组卷
|
4卷引用:2006年普通高等学校招生考试数学(理)试题(福建卷)
2006年普通高等学校招生考试数学(理)试题(福建卷)河南省郑州市第一中学2019-2020学年高二上学期第2次测试数学试题广东省广州市协和中学2022-2023学年高二下学期2月月考数学试题(已下线)专题15 数列不等式的证明 微点6 数列不等式的证明综合训练
10 . 在数列
中,若
是正整数,且
,则称
为“绝对差数列”.
(1)举出一个前五项不为零的“绝对差数列”(只要求写出前十项):
(2)若“绝对差数列”
中,
,数列
满足
,分别判断当
时,
与
的极限是否存在,如果存在,求出其极限值;
(3)证明:任何“绝对差数列”中总含有无穷多个为零的项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a1202076e1ec7ef9e07c6c2297fa8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)举出一个前五项不为零的“绝对差数列”(只要求写出前十项):
(2)若“绝对差数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4303f4fde19effaaa107ef52c82c4641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4b33a462fdfa21630f27433bc29f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19893fdb67307d35a9115ef4f3f1202a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(3)证明:任何“绝对差数列”中总含有无穷多个为零的项.
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