1 . 等差数列
各项均为正数,
,前n项和为
,等比数列
中,
,且
.
(1)求
与
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b95ff683b0ae3185c1a0f538b4b090.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f1b287682688110f7d55800521bbc1.png)
您最近一年使用:0次
2022-11-13更新
|
2415次组卷
|
3卷引用:2008年普通高等学校招生考试数学(文)试题(江西卷)
真题
名校
2 . 设点
在直线
上,过点P作双曲线
的两条切线
,切点为A、B,定点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/fdfacf76-8a21-4dd3-af4b-2dfbf13862c6.png?resizew=199)
(1)过点A作直线
的垂线,垂足为N,试求
的重心G所在的曲线方程;
(2)求证A、M、B三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6395710a30fa9711dce054381aa1e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d4a832771ba45d407f31000c8fcf37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fcd81d547cccd7945877462f288220.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/fdfacf76-8a21-4dd3-af4b-2dfbf13862c6.png?resizew=199)
(1)过点A作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(2)求证A、M、B三点共线.
您最近一年使用:0次
2022-11-12更新
|
707次组卷
|
3卷引用:2008年普通高等学校招生考试数学(理)试题(江西卷)
2008年普通高等学校招生考试数学(理)试题(江西卷)辽宁省大连市名校2023-2024学年高二上学期11月阶段性模拟测试数学试题(已下线)专题03 圆锥曲线题型全归纳(九大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)
3 . 等差数列
各项均为正整数,
,前n项和为
,等比数列
中,
,且
,
是公比为64的等比数列.
(1)求
与
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f56a6c48dfe9b1a169bc4239adf6b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afef6271af7462ffa935a1846e3ec90.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f1b287682688110f7d55800521bbc1.png)
您最近一年使用:0次
2022-11-12更新
|
1147次组卷
|
2卷引用:2008年普通高等学校招生考试数学(理)试题(江西卷)
真题
解题方法
4 . 在
中,a、b、c分别为角A、B,C所对的边长,
,
,
.求A、B及b、c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc09714a41066bcabf33e63ce19e441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a62158bd25d9c81c928ea42ace2f54.png)
您最近一年使用:0次
真题
解题方法
5 . 已知各项均为正数的数列
满足:
,且
.
(1)求数列
的通项公式;
(2)设
,求
,并确定最小正整数n,使
为整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af491c23f6cfc8b8746ad9f875922c51.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684cf90b338961dc3f9ef8df1f7a53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d30d6eecf80cb8a09ed2e585a94ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d30d6eecf80cb8a09ed2e585a94ea9.png)
您最近一年使用:0次
2022-11-12更新
|
1136次组卷
|
2卷引用:2006 年普通高等学校招生考试数学(文)试题(江西卷)
真题
解题方法
6 . 如图,椭圆
的右焦点为
,过点F的一动直线m绕点F转动,并且交椭圆于A、B两点,P为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/bec862e1-5fef-47aa-9ab3-a9c82f04ae84.png?resizew=159)
(1)求点P的轨迹H的方程;
(2)在Q的方程中,令
,
,设轨迹H的最高点和最低点分别为M和N.当
为何值时,
为一个正三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011e2d4e2fc81bf00711025de8b31175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6fe0f38ab3095ac6575faa02914b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/bec862e1-5fef-47aa-9ab3-a9c82f04ae84.png?resizew=159)
(1)求点P的轨迹H的方程;
(2)在Q的方程中,令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e598f08618337323f0ca508a99c4331c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5379dd4f562e89b5375ef7de6a6a1907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
您最近一年使用:0次
真题
7 . 在锐角
中,角A、B,C所对的边分别为a、b、c,已知
.
(1)求
的值;
(2)若
,求b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e9b8f23e9a3dea4dc66bcfda37063.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f614081f01db42fa63b2a1ac92617cc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d292f12858079cde808bcdd68c325132.png)
您最近一年使用:0次
真题
解题方法
8 . 某商场举行抽奖促销互动,抽奖规则是:从装有9个白球、1个红球的箱子中每次随机地摸出一个球,记下颜色后放回,摸出一个红球可获得二等奖;摸出两个红球可获得一等奖.现有甲、乙两位顾客,规定:甲摸一次,乙摸两次.求:
(1)甲、乙两人都没有中奖的概率;
(2)甲、乙两人中至少有一人获二等奖的概率.
(1)甲、乙两人都没有中奖的概率;
(2)甲、乙两人中至少有一人获二等奖的概率.
您最近一年使用:0次
真题
9 . 如图,椭圆
的右焦点为
,过点F的一动直线m绕点F转动,并且交椭圆于A、B两点,P为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/d4b123ee-96fb-4f10-9da5-5b480024f7c0.png?resizew=160)
(1)求点P的轨迹H的方程;
(2)在Q的方程中,令
,确定
的值,使原点距椭圆的右准线l最远,此时,设l与x轴交点为D,当直线m绕点F转动到什么位置时,三角形
的面积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011e2d4e2fc81bf00711025de8b31175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6fe0f38ab3095ac6575faa02914b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/d4b123ee-96fb-4f10-9da5-5b480024f7c0.png?resizew=160)
(1)求点P的轨迹H的方程;
(2)在Q的方程中,令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e5bdf4b43302261ade1435f6e3dbcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
您最近一年使用:0次
2022-11-12更新
|
635次组卷
|
2卷引用:2006 年普通高等学校招生考试数学(理)试题(江西卷)
真题
解题方法
10 . 如图,在三棱锥
中,侧面
是全等的直角三角形,
是公共的斜边,且
,另一个侧面
是正三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/a60a5fac-cd8e-4e1c-8688-d5fedc01b5eb.png?resizew=185)
(1)求证:
;
(2)求二面角
的大小;
(3)在直线
上是否存在一点F,使
与平面
成
角?若存在,确定F的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345f79137236e40b5b15c11c459f25b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efc8c1dbf6794a66f5fe33a35482917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/a60a5fac-cd8e-4e1c-8688-d5fedc01b5eb.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c909cd1b6f3fa1ec39eb245e8f5c11c.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
您最近一年使用:0次