名校
1 . 锐角
中,角
、
、
所对的边分别为
、
、
,若
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882589c896c6993d9687f0e14a283481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c2bb7be2e9410a16502268fd4c67be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14c6709d2a04863cacdee618b20613e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b331bbdd68d110681fc4547748b93bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4e63a482a0bb3be6d670ab6f2635db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554165bc8be9bf5d2b1d6092bbd159b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64de588abb509a34d975835d160f1d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88930803607a5bb49ade2389311e1cef.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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黑龙江省大庆市东风中学2023-2024学年高二上学期10月月考数学试题(已下线)《2018-2019学年同步单元双基双测AB卷》 必修五专题一正弦定理B卷2016-2017学年河南省郑州一中下期17届高三百校联盟高考复习理科二数学试卷(已下线)专题4-2 正余弦定理与解三角形小题归类1-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)安徽省合肥市肥东县第二中学2021届高三下学期4月月考理科数学试题(已下线)专题4-3 正余弦定理与解三角形小题归类 - 2广东省珠海市第一中学2023届高三下学期5月阶段性考试一数学试题青海省西宁北外附属新华联外国语高级中学2022-2023学年高三上学期第三次模拟考试数学试题(已下线)第四章 三角函数与解三角形 专题10 解三角形中的范围问题 高中数学优质试题一题多解和变式训练
2014·吉林长春·三模
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2 . 已知实数
满足:
,
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515803ab30088b726ce41e782425f82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbafac8e13931a310a9730cfe906d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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17卷引用:黑龙江省哈尔滨师范大学附属中学2019-2020学年高二10月月考数学试题
黑龙江省哈尔滨师范大学附属中学2019-2020学年高二10月月考数学试题江西科技学院附属中学2017-2018学年上学期高二第一次月考(理)数学试卷【全国百强校】湖南省浏阳一中、醴陵一中2018-2019学年高二12月联考数学(文)试题四川省南充市顺庆区南充高级中学2018-2019学年高二上学期期中数学(文)试题(已下线)2014届吉林省长春市高中毕业班第三次调研测试理科数学试卷(已下线)2014届吉林省长春市高中毕业班第三次调研测试文科数学试卷(已下线)2015届浙江省重点中学协作体高三第一次适应性训练文科数学试卷(已下线)2015届辽宁师范大学附属中学高三上学期期中考试理科数学试卷2017届江西吉安一中高三上期中考试理数试卷湖北省浠水县实验高级中学2017届高三数学(文)测试题(已下线)二轮复习 【理】专题22 选择题解题方法 押题专练(已下线)二轮复习【文】专题20 选择题解题方法 押题专练【省级联考】湖南湖北八市十二校2019届高三第一次调研联考文科数学试题【市级联考】河南省洛阳市2019届高三上学期尖子生第二次联考数学文科试题(已下线)第七单元 不等式(B卷 滚动提升检测)-2021年高考数学(理)一轮复习单元滚动双测卷(已下线)2022年高考考前20天终极冲刺攻略(三)【理科数学】(5月31日)(已下线)专题5-2 线性规划综合应用 (讲+练)-1
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3 . 已知椭圆的方程为
,其离心率
,且短轴的个端点与两焦点组成的三角形面积为
,过椭圆上的点
作
轴的垂线,垂足为
,点
满足
,设点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)若直线
与曲线
相切,且交椭圆于
两点,
,记
的面积为
,
的面积为
,求
的最大值 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b678bdfa4db23e9cebf26efc3dd446d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f02acfba2c2a8b11c643eab7e7aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50524aaa1503092bd18419de6d851541.png)
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3卷引用:黑龙江省哈尔滨市第六中学2020-2021学年高二上学期期末考试数学(理)试题
名校
4 . 设抛物线
的焦点为
,
为抛物线上第一象限内一点,满足
,已知
为抛物线准线上任一点,当
取得最小值时,
的外接圆半径为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a499bb7ab9d720e663ec50f9355469d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abeecbeb608c686ea8c36221a4d8fc46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77613db85ffeb465c581955c4b2885ea.png)
您最近一年使用:0次
2018-06-01更新
|
2991次组卷
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4卷引用:黑龙江省鹤岗市第一中学2019-2020学年高二上学期期中数学(理)试题
黑龙江省鹤岗市第一中学2019-2020学年高二上学期期中数学(理)试题【全国市级联考】山东省潍坊市2018届高三第三次高考模拟考试数学(文)试题【全国市级联考】山东省潍坊市2018届高三第三次高考模拟考试数学(理)试题(已下线)专题9-1 圆锥小题压轴九类-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)
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5 . 设A、B分别为双曲线
(a>0,b>0)的左、右顶点,P是双曲线上不同于A、B的一点,直线AP、BP的斜率分别为m、n,则当
取最小值时,双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f11a47ded527c091de6d7cb8875eb40.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:黑龙江省农垦建三江管理局第一高级中学2020-2021学年高二上学期期中考试 数学(文)试题
名校
6 . 已知双曲线
的左、右顶点分别为
,
,
为双曲线左支上一点,
为等腰三角形且其外接圆的半径为
,则该双曲线的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2694c32ca1e120e988012b7ecd74f625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e24b2ff05ffec78200a3f8241aabf6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-04-08更新
|
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13卷引用:黑龙江省大庆市大庆中学2019-2020学年高二上学期期中数学(理)试题
黑龙江省大庆市大庆中学2019-2020学年高二上学期期中数学(理)试题【校级联考】湖北省宜昌县域高中协同发展共同体2018-2019学年高二上学期期末考试数学(理)试题重庆市巴蜀中学2018届高三适应性月考(八,3月)数学(理)试题(已下线)【全国百强校】河北省衡水中学2019届高三下学期一调考试文科数学试题2019年河北省辛集中学高三上学期模拟考试(一)数学(文)试题2020届河北省衡水中学高三下学期一调考试数学文科试题(已下线)2020届高三3月第01期(考点08)(文科)-《新题速递·数学》(已下线)专题05 解析几何(第一篇)-备战2020高考数学黄金30题系列之压轴题(新课标版)(已下线)专题14 正弦定理和余弦定理-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(已下线)第十八篇离心率01—2020年高考数学选填题专项测试(文理通用)(已下线)专题12 三角形的心的千万应用-备战2020年高考数学二轮痛点突破专项归纳与提高(已下线)专题01 数形巧结合,“玩转”离心率(第五篇)-2020高考数学压轴题命题区间探究与突破(已下线)专题39 盘点圆锥曲线中的离心率问题——备战2022年高考数学二轮复习常考点专题突破
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7 . 如图,已知
为抛物线
的焦点,点
,
在该抛物线上且位于
轴的两侧,
(其中
为坐标原点),则
与
面积之差的最小值是
![](https://img.xkw.com/dksih/QBM/2017/12/23/1844447058378752/1847623352131584/STEM/3b4f7ad083b348919a0d3c5797f8221a.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55be6a3f46cf1d6700fc5f2a79e3ffd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1377ebe320b37246af7bd578663493fa.png)
![](https://img.xkw.com/dksih/QBM/2017/12/23/1844447058378752/1847623352131584/STEM/3b4f7ad083b348919a0d3c5797f8221a.png?resizew=186)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-27更新
|
979次组卷
|
3卷引用:黑龙江省大庆中学2020-2021学年高二上学期期末考试数学(文)试题
8 . 已知数列
的前
项和
满足:
.
(1)求证:数列
是等比数列,并求数列
的通项公式;
(2)若数列
满足
,
为数列
的前
项和,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/67bd36be3bb1aa5eb5db74b2a7af7f7e.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c485d7f863edc6299df64bd89d4705b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e2b779d4e1468d0cc9bb859653f618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de633c277a234e59e274ffb1f9d59718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf49305249eb983fb10c95c2287d1ee.png)
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2017-06-20更新
|
996次组卷
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4卷引用:黑龙江省牡丹江市第二高级中学2023-2024学年高二上学期1月期末数学试题
9 . 已知数列
中
,函数
.
(1)若正项数列
满足
,试求出
,
,
,由此归纳出通项
,并加以证明;
(2)若正项数列
满足
(n∈N*),数列
的前项和为Tn,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f540ed88caf03ebe453553969e43944.png)
(1)若正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6aa8089b5d9b722aff679af3c4d289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf9e123fb1b7cf9edb5d53f82a42def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89d1f32c1605cfdb8e8855051b9f6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99cf906aaaf67f8ff2d23af499c37f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e06b0fda8954c395f1a3ccfbc88698.png)
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2016-12-03更新
|
829次组卷
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3卷引用:黑龙江省齐市地区普高联谊校2018-2019学年高二下学期期中考试数学(文)试题
10 . 已知数列中
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d01d48994025a171329e98ca040836.png)
(1)求证:数列
是等比数列,并求数列
的通项公式![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/f223ffba102f46088fc273d63d879a9b.png)
(2)若数列
满足
,数列
的前
项和为
,若不等式
对一切
恒成立,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/bac169749428404289fed2c08cdaa2d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d01d48994025a171329e98ca040836.png)
(1)求证:数列
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/472c4010257544f7a3da77c23ae82acf.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/bac169749428404289fed2c08cdaa2d7.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/f223ffba102f46088fc273d63d879a9b.png)
(2)若数列
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/f9613dc7ce9c41a4b6d539bda6a5b87f.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/79e60d4bb76e452d8aad844c1eae21f9.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/f9613dc7ce9c41a4b6d539bda6a5b87f.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/2b360b62bd734cb48803dda2dcfc81a2.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572447020662784/1572447026880512/STEM/9f49e34bf76942f8a996ee21d02a2527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d974ad18904f33f3fb20560dba6b40bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5235e9027fd05f69f760241e8f08a13c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fffd330dd6b9241659d790bd2a7fb2.png)
您最近一年使用:0次
2016-12-03更新
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1365次组卷
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2卷引用:2015-2016学年黑龙江大庆实验中学高二上学期开学考试理科数学试卷