解题方法
1 . 已知数列
中,
,
,(
).
(1)求证:数列
是等比数列.
(2)求数列
的通项.
(3)若数列
的前n项和为
,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b95ba7b3a6ccc54a03c9a79c6e79ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09881de0dc186bbcd1e60eb00159ee97.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf9c9a2e8696cd95e82dcda7d34a74a.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2 . 已知数列
的通项公式为
.
(1)问
是不是这个数列的项?如果是,为第几项;如果不是,请说明理由;
(2)判断数列
的增减性并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f0527640c152f0058bee8d76e0c43a.png)
(1)问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(2)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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3 . 已知P是抛物线
的准线上任意一点,过点P作抛物线C的两条切线
,切点分别为
.
(1)若点P纵坐标为0,求此时抛物线C的切线方程;
(2)设直线
的斜率分别为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若点P纵坐标为0,求此时抛物线C的切线方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
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4 . 如图,
和
所在平面互相垂直,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/a5135f69-83b4-4c65-be60-ca2e18259675.png?resizew=170)
(1)求证:
;
(2)求平面
和平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca76d0d2614f113bcd4c9e134b95123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d33b11489be0d7f7ec786fb04907c3c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/a5135f69-83b4-4c65-be60-ca2e18259675.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4739afd7311501e948aa4e1e5c1cb17.png)
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解题方法
5 . 设
的定义域为R,若
,都有
,则称函数
为“
函数”.
(1)若
在R上单调递减,证明
是“
函数”;
(2)已知函数
.
①证明
是
上的奇函数,并判断
是否为“
函数”(无需证明);
②若对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8625151f40f341575c1a71992e485188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebad7d6cac2a8c2eaa6fc5682ff9b909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4747903d0563a352d8ef757483543ede.png)
①证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
②若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4dc9275cade48cab4845f2c12f0998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
6 . 已知函数
有两个零点.
(1)求
的取值范围;
(2)设
,
是
的两个零点,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3c53e08545a3fb2094d5acb9bf759c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684bcf84f0a266515bfafde0da903050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b9eb2b30a76dd08912f49cc804c3ae.png)
您最近一年使用:0次
2024-02-17更新
|
909次组卷
|
6卷引用:河南省驻马店市2023-2024学年高三上学期期末统一考试数学试题
河南省驻马店市2023-2024学年高三上学期期末统一考试数学试题 (已下线)重难点2-4 利用导数研究不等式与极值点偏移(8题型+满分技巧+限时检测)(已下线)微专题08 极值点偏移问题(已下线)2023-2024学年高二下学期第一次月考解答题压轴题十六大题型专练(1)广东省深圳市翠园中学2023-2024学年高二下学期第一次段考数学试卷(已下线)专题6 导数与零点偏移【讲】
名校
解题方法
7 . 已知椭圆
的上、下顶点分别是
,点P(异于
两点),直线PA与PB的斜率之积为
,椭圆C的长轴长为6.
(1)求C的标准方程;
(2)已知
,直线PT与椭圆C的另一个交点为Q,且直线AP与BQ相交于点D,证明点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc48b2f1fe89050e80db7369248c789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b889efe020137b112bfafaa8e0becda4.png)
(1)求C的标准方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f134c358bb5b5fa06c935a47c4ebf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2024-02-04更新
|
358次组卷
|
5卷引用:河南省驻马店市部分学校2024届高三上学期期末联考数学试题
8 . 已知函数
.
(1)求函数
的定义域;
(2)判断函数
的奇偶性并说明理由;
(3)求证:对于任意的
都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae61359030186bdfa996c45f60d20b5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)求证:对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab87accf1942ab80def96d12ef173163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db88cb898ab676397988c78ab8e7bc5a.png)
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名校
9 . 在直四棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/7564e755-d1e1-4085-8873-2354846050d1.png?resizew=157)
(1)证明:平面
平面
.
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a726bd948d894e13b70fbae0d96957.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/7564e755-d1e1-4085-8873-2354846050d1.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0fbd88fdb064072eedd136e9cb41ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
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2023-12-29更新
|
254次组卷
|
2卷引用:河南省驻马店市部分学校2024届高三上学期期末联考数学试题
名校
10 . 已知
,
,
是关于x的方程
的三个不同的根,且
.
(1)求a的取值范围;
(2)证明:
.
![](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/87d1031ed0ad1f362f0fca05e4761034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
(1)求a的取值范围;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafcbd8c4efe661449b82f4ccdc6f70c.png)
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2023-12-29更新
|
465次组卷
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5卷引用:河南省驻马店市部分学校2024届高三上学期期末联考数学试题