名校
解题方法
1 . 已知双曲线G的中心为坐标原点,离心率为
,左、右顶点分别为
,
.
(1)求
的方程;
(2)过右焦点
的直线l与G的右支交于M,N两点,若直线
与
交于点
.
(i)证明:点
在定直线上:
(ii)若直线
与
交于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d6b7a54a256cb0ecd0ea2d8262f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fff64ee6ea236550185efc7ed1b598.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(i)证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(ii)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44ce1d330a34bf5b88efbe7a6b327f7.png)
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2024-04-17更新
|
1195次组卷
|
2卷引用:辽宁省葫芦岛市2024届高三下学期第一次模拟数学试题
名校
2 . 如图,在四棱锥
中,PA
面ABCD,AB
CD,且CD=2,AB=1,BC=
,PA=1,AB
BC,N为PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/2e5070b6-be71-4ac1-8866-3db509d25ff4.png?resizew=190)
(1)求证:AN
平面PBC;
(2)在线段PD上是否存在一点M,使得直线CM与平面PBC所成角的正弦值是
?若存在,求出
的值,若不存在,说明理由;
(3)在平面PBC内是否存在点H,满足
,若不存在,请简单说明理由;若存在,请写出点H的轨迹图形形状(不必证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/2e5070b6-be71-4ac1-8866-3db509d25ff4.png?resizew=190)
(1)求证:AN
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)在线段PD上是否存在一点M,使得直线CM与平面PBC所成角的正弦值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a37fb1eff68a7133822b1b52d627e.png)
(3)在平面PBC内是否存在点H,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2da5312b15f602fcb8c0ffe9ea57a95.png)
您最近一年使用:0次
2022-11-18更新
|
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3卷引用:辽宁省大连市第八中学2022-2023学年高三上学期12月月考数学试题
辽宁省大连市第八中学2022-2023学年高三上学期12月月考数学试题(已下线)第三章 空间轨迹问题 专题一 立体几何轨迹常见结论及常见解法 微点3 立体几何轨迹常见结论及常见解法综合训练【培优版】福建省福州市八县(市)协作校2022-2023学年高二上学期期中考试数学试题
3 . 已知函数
(
).
(1)指出
的单调区间;(不要求证明)
(2)若
,
,
,
满足
,
,
,且
(
,
,
),求证:
;
(3)证明:当
时,不等式
(
)对任意
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf40041a26fe4539efc7185b45dcf53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
(1)指出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ec808ad60dbf016632ec816eaca1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3916e25d592d36e90fe4f35be72c43c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe72ccd2bee6a6e9d7199261b3e3da69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64c6bd88c09d6848101421a9564c19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd69d26f76d5a55cf072fa49b53d437.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d7482925b44b2d55a8d1c9b8fcc1be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813b9aa31af28f99d21fc0dc0c95475c.png)
您最近一年使用:0次
名校
4 . 已知数列{an}满足
,
,
,
成等差数列.
(1)证明:数列
是等比数列,并求{an}的通项公式;
(2)记{an}的前n项和为Sn,.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2f6482fd06dce71fb40b2b26c33b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c8c0c5f13962a0d47db3cfd4f6dff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604fbee0544dc18d9b15d5243dad9f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bae11b31f657478e97646895a289e3.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
(2)记{an}的前n项和为Sn,.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253f760453e929f718cc63b8617189ac.png)
您最近一年使用:0次
2021-06-08更新
|
1481次组卷
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4卷引用:辽宁省大连市育明高级中学2023-2024学年高三上学期期中数学试题
辽宁省大连市育明高级中学2023-2024学年高三上学期期中数学试题浙江省金华市2021届高三下学期5月高考仿真模拟数学试题(已下线)2020年高考浙江数学高考真题变式题17-22题(已下线)专题03 《数列》中的压轴题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
5 . 已知椭圆方程
,直线
与
轴相交于点
,过右焦点
的直线与椭圆交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2a578fbb-b7c1-47fb-bc8a-99389451ebc1.png?resizew=230)
(1)若过点
的直线
与
垂直,且与直线
交于点
,线段
中点为
,求证:
.
(2)设
点的坐标为
,直线
与直线
交于点
,试问
是否垂直
,若是,写出证明过程,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2a578fbb-b7c1-47fb-bc8a-99389451ebc1.png?resizew=230)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cfde7b3d70c60ccc5187a12477b48f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d738555c0a4b2c15ae61d4e85fdbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
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2012高二下·浙江嘉兴·学业考试
名校
解题方法
6 . 已知函数
.
(1)求函数
的极值;
(2)对于曲线上的不同两点
,如果存在曲线上的点
,且
使得曲线在点
处的切线
,则称
为弦
的伴随直线,特别地,当
时,又称
为
的
—伴随直线.
①求证:曲线
的任意一条弦均有伴随直线,并且伴随直线是唯一的;
②是否存在曲线
,使得曲线
的任意一条弦均有
—伴随直线?若存在,给出一条这样的曲线,并证明你的结论;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aca3bb4e25eaef56fb7ba9c79da0944.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)对于曲线上的不同两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a00dc6f0af494437c9f98223f3e861f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69264c1535cf0ccdac2d186da669df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1635f56ef7fb304920f253f30fbba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0429adcf685c47f2d97d567387385461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
①求证:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
②是否存在曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次
2016-12-01更新
|
986次组卷
|
4卷引用:2020届辽宁省大连市高三上学期第二次模拟考试数学(理)试卷
2020届辽宁省大连市高三上学期第二次模拟考试数学(理)试卷(已下线)江苏省苏锡常镇四市2023届高三下学期3月教学情况调研(一)数学试题变式题17-22(已下线)2011-2012学年浙江省嘉兴一中高二下学期摸底考试理科数学试卷2016-2017学年湖南省长沙市第一中学高二下学期第一次月考数学(理)试卷
7 . 已知数列
的前
项和为
,且满足
.
(Ⅰ)
是否为等差数列?证明你的结论;
(Ⅱ)求
和
;
(Ⅲ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://img.xkw.com/dksih/QBM/2016/7/15/1572923997904896/1572924003917824/STEM/663e68f7459d4e149a9327b208ae76de.png)
(Ⅰ)
![](https://img.xkw.com/dksih/QBM/2016/7/15/1572923997904896/1572924003917824/STEM/7e83670b5a6d44a8975809ff01487b6f.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(Ⅲ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdff400402eecf43528b95fd07cab1b8.png)
您最近一年使用:0次
8 . 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)
您最近一年使用:0次
2016-12-03更新
|
829次组卷
|
3卷引用:2016届辽宁省大连市八中高三12月月考理科数学试卷
2010·江西·三模
9 . 已知函数
(
为自然对数的底数),
(
为常数),
是实数集
上的奇函数.
(1)求证:
;
(2)讨论关于
的方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1548ec8dc77184e848cd56b2e6e8f8cb.png)
的根的个数;
(3)设
,证明:
(
为自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ffb5a3725b3e37f465b66492111eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24779f7cc7a19ee48a7f8c7175ff7ada.png)
(2)讨论关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1548ec8dc77184e848cd56b2e6e8f8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fe77a99da5ee60bd548f0b97212acb.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d726666f99a5a41dd673a2330e377b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153cfa05480bfab85d8fd46c0434b4d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
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