12-13高二上·广东揭阳·期末
1 . 设数列
的前项n和为
,若对于任意的正整数n都有
.
(1)设
,求证:数列
是等比数列,并求出
的通项公式.
(2)求数列
的前n项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1183ab832ee8361f8509cc60c8f9315.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e290f06f8f75e5bbfec2d27c0c6e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496f142d8ae5acb06e83526eaa3ef87.png)
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2019-11-07更新
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17卷引用:2015-2016学年河南省新乡延津高中高一下期中数学试卷
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2 . 设
为实数,函数
.
(1)求
的单调区间与极值;
(2)求证:当
且
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1154af3116d497faa5a4ceb65d41e3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea0753a8be31b5229563076c9aae09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ffe599065a802c34ce1736a5031cae.png)
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2019-01-30更新
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27卷引用:2015-2016年河南新乡一中高二普通下第二次周练理数学卷
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3 . 已知
为等差数列
的前
项和,
,且
是
与
的等比数列.
(1)求数列
的通项公式;
(2)若
为整数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f86a8746a583f411fb73c6334eb27b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9903b063c08d9d3ada396cf598cc21.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abb93c7c3a3601d8dd986c8c7a1178e.png)
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2017-02-08更新
|
251次组卷
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2卷引用:2017届河南新乡一中高三理上学期月考二数学试卷
4 . 已知
,函数
.
(1)求证:曲线
在点
处的切线过定点;
(2)若
是
在区间
上的极大值,但不是最大值,求实数
的取值范围;
(3)求证:对任意给定的正数
,总存在
,使得
在
上为单调函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d335b195cdf1613e21c7cccbe95141fc.png)
(1)求证:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c887da0c850acf41ab249cc262ae39.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c44108b7b4dcaaec3772a236291ee5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c114cecc47293e7d1aefff01076bd07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:对任意给定的正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6fbf3389c4c4abfca49d814c1d7435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fd8117762eb4e8974636db1c48b050.png)
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3卷引用:2017届河南新乡一中高三理上学期月考二数学试卷
5 . 如图①所示,四边形
为等腰梯形,
,且
于点
为
的中点.将
沿着
折起至
的位置,得到如图②所示的四棱锥
.
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573143813881856/1573143819485184/STEM/e709e2b0a4da407f8b1aad0247758a43.png)
(1)求证:
平面
;
(2)若平面
平面
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e7a0dd3f6c3cf260830f79a640ad35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73d6dde62cacc0d1fc589d3f1565304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/108037063bf595dfd545be1bc0fcf210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5849c27ecfff2b536d3454e866d4e506.png)
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573143813881856/1573143819485184/STEM/e709e2b0a4da407f8b1aad0247758a43.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803aeb62077cf5b77329dc3f9762d701.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941a9b85390d8865a2a61854809256db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8064a32f989dd67e18d32e724083798b.png)
您最近一年使用:0次
解题方法
6 . 已知函数f(x),当x,y∈R时,恒有f(x+y)=f(x)+f(y).当x>0时,f(x)>0
(1)求证:f(x)是奇函数;
(2)若
,试求f(x)在区间[﹣2,6]上的最值;
(3)是否存在m,使
对于任意x∈[1,2]恒成立?若存在,求出实数m的取值范围;若不存在,说明理由.
(1)求证:f(x)是奇函数;
(2)若
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593263230976/STEM/a4b63c7ee1b444b5a7e94b17eb0ffa48.png)
(3)是否存在m,使
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593263230976/STEM/b68160434874448b9eea00288af70323.png)
您最近一年使用:0次
2016-12-04更新
|
738次组卷
|
2卷引用:2015-2016学年河南新乡一中高二重点下七次周练文数学卷
7 . 如图,在多面体
中,四边形
为正方形,
,
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/10/24/1573092315496448/1573092321591296/STEM/92c7c05817a74378bfb6cd50236d61e2.png)
(1)求证:
平面
;
(2)在线段
上是否存在一点
,使得二面角
的大小为
?若存在,求出
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a36cb09703acf369798d6cc6afe618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dd086ab6cc5aa63e8c33df76a7cd11.png)
![](https://img.xkw.com/dksih/QBM/2016/10/24/1573092315496448/1573092321591296/STEM/66cdaf79434341668dac0c310af48aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6591745a0ad26e8258297a099cef15a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a3ae16e3f4a6b8994eb716f8502ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2016/10/24/1573092315496448/1573092321591296/STEM/92c7c05817a74378bfb6cd50236d61e2.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa645d5ec4a39d662a0404e45f095fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02a0617a1e20944dcbd40e1c30d36cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
您最近一年使用:0次
8 . 如图(1),在三角形
中,
为其中位线,且
,
,若沿
将三角形
折起,使
,构成四棱锥
,且
.
![](https://img.xkw.com/dksih/QBM/2016/9/7/1573002292027392/1573002298400768/STEM/53ce039a060c46b29c8d01afdceb2997.png)
(1)求证:平面
平面
;
(2)当异面直线
与
所成的角为
时,求折起的角度
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc55bf6b38c0d90bc7f53a47bfa6f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35357b9f4ba37064cad9faa1c4991d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7e6afdadaa3239eaec8492a11640f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c54157dc38fe4de0d9c8b72fe9b4116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deafb8c6f4e2c4938692506ed94f7446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbe4053a65b67949981f24c0d30b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61a31c05b4feb8989f203f975305794.png)
![](https://img.xkw.com/dksih/QBM/2016/9/7/1573002292027392/1573002298400768/STEM/53ce039a060c46b29c8d01afdceb2997.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a75f100e9959f276f1b9a5744a25fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c54157dc38fe4de0d9c8b72fe9b4116.png)
(2)当异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361b892411de891f4266b42f5ebfd906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6321b1b15b47a98a86268229633daf77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数
.
(1)求函数
的最小值;
(2)设
,讨论函数
的单调性;
(3)若斜率为
的直线与曲线
交于
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13e9775ebd39cb45cb001393709b42c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffb1a5cc934731fa849d2af47d805c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
(3)若斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d31f9ce464f2ce3b24833b70595941c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0262ecdde9c22af98730e5a2144cae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70898d64ac02d8800d02d8aab7653ff.png)
您最近一年使用:0次
2016-12-04更新
|
284次组卷
|
5卷引用:2017届河南新乡一中高三上学期第一次周练数学(理)试卷
10 . 如图①所示,四边形
为等腰梯形,
,且
于点
为
的中点.将
沿着
折起至
的位置,得到如图②所示的四棱锥
.
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573144054857728/1573144060805120/STEM/e8665b353e7c46f5883f43fddd7faf94.png)
(1)求证:
平面
;
(2)若平面
平面
,三棱锥
的体积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e7a0dd3f6c3cf260830f79a640ad35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73d6dde62cacc0d1fc589d3f1565304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/108037063bf595dfd545be1bc0fcf210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5849c27ecfff2b536d3454e866d4e506.png)
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573144054857728/1573144060805120/STEM/e8665b353e7c46f5883f43fddd7faf94.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803aeb62077cf5b77329dc3f9762d701.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941a9b85390d8865a2a61854809256db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6ddf8e3c94beb236d2f133528bbf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe26e5673a3af533756977a52122a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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