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1 . 已知双曲线
经过点
,则C的渐近线方程为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ce1534a372db7666711443631c4ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
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2 . 从抛物线
上各点向
轴作垂线段,垂线段中点的轨迹为
.
(1)求
的轨迹方程;
(2)
是
上的三点,过三点的三条切线分别两两交于点
,
①若
,求
的值;
②证明:三角形
与三角形
的面积之比为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b05cc4297b34393d18222e7299e8f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4638124355b7be66231a604f667f0c.png)
②证明:三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
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3 . 对于数列
,如果存在一个正整数
,使得对任意
,都有
成立,那么就把这样的一类数列
称作周期为
的周期数列,
的最小值称作数列
的最小正周期,简称周期.
(1)判断数列
和
是否为周期数列,如果是,写出该数列的周期,如果不是,说明理由.
(2)设(1)中数列
前
项和为
,试问是否存在
,使对任意
,都有
成立,若存在,求出
的取值范围,若不存在,说明理由.
(3)若数列
和
满足
,且
,是否存在非零常数
,使得
是周期数列?若存在,请求出所有满足条件的常数
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223ed9652852ca4d996fd1f20808df9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126141b8d68abc6a0823fade2f1b8127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e99223511de75d15510876feb79edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429fff0b39ebf28a75a3c34f471f3f30.png)
(2)设(1)中数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.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/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5014429b696a37a9461b66f22b1800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5653b60d16ec4e653518f0562680250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00886c597a40dfcbbad7efffc545c466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 根据变量
和
的成对样本数据,由一元线性回归模型
得到经验回归模型
,求得如图所示的残差图.模型误差( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73391a4bd7fc64c88aa17d2f5d17b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db6103cb0f1d2bd6b19235d53ee7e98.png)
A.满足一元线性回归模型的所有假设 |
B.不满足一元线性回归模型的![]() |
C.不满足一元线性回归模型的![]() |
D.不满足一元线性回归模型的![]() ![]() |
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解题方法
5 . 已知复数
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda11e45cc4f00e54c7186b3a1f4fb68.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.![]() |
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解题方法
6 . 设
,
,
,若满足条件的
与
存在且唯一,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_______ , ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8640aafe54018ba013295b68e2946a7a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28a96ee1e62b7fbc1fb0257ad0deeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd61d59ee2dc6cc43b25b7ee39ca58d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243288f8315e8ea94bda2ec3fec6a984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8640aafe54018ba013295b68e2946a7a.png)
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7 . 已知
,则
被3除的余数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f3dff97bd543ce7bde8e332ca6a3a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27b476334ed0983edb1ec7f1f09d2a0.png)
A.3 | B.2 | C.1 | D.0 |
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8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5edbbc3f9dcc564f13325250a361235.png)
(1)求曲线
在点
处的切线方程;
(2)求证:函数
的图象位于直线
的下方;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5edbbc3f9dcc564f13325250a361235.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
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9 . 函数
的最小正周期为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e47569e5c2923e9fb9503865872554.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知函数的定义域为
,且
,
,则( )
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
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