9-10高三下·北京东城·期中
1 . (
已知椭圆
,以原点为圆心,椭圆的短半轴为半径的圆与直线
相切.
(1)求椭圆C的方程;
(2)设
轴对称的任意两个不同的点,连结
交椭圆![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/4415d940d8904a9689cda1d42e7522a6.png)
于另一点
,证明:直线
与x轴相交于定点
;
(3)在(2)的条件下,过点
的直线与椭圆
交于
、
两点,求
的取值
范围.
已知椭圆
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/d317303a9cba459a8167a1bae5ebcd04.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/e66f218312e34cc9afd1768e36ef0ae1.png)
(1)求椭圆C的方程;
(2)设
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/54b2eef1aeff4bc685e7c0cc2d4fafa4.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/ff50b06d875243aa9c5fec5e4b82948c.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/4415d940d8904a9689cda1d42e7522a6.png)
于另一点
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/caf7547391e64ab4ba1a6b0f1d170ed3.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/a906fb03e42b4188abba78dc1072ff0d.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/eea432741420472ebfb45fae7d8c381d.png)
(3)在(2)的条件下,过点
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/eea432741420472ebfb45fae7d8c381d.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/4415d940d8904a9689cda1d42e7522a6.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/dfc1063fb8cd470a9d120b2c915ec9c7.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/b2d5c16639af4707b7212c764bd13816.png)
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570028693577728/1570028699033600/STEM/ffebbda395f049cfb4fe73a8d4323ad6.png)
范围.
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2 . 已知函数
(
)在其定义域内有两个不同的极值点.
(I)求a的取值范围;
(II)记两个极值点分别为
,且
.已知
,若不等式
恒成立,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5124251b521fb2525f55b99ee9ff6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(I)求a的取值范围;
(II)记两个极值点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5def2e680848aaf69b5a8c0f50ce05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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10卷引用:北京东城五中2017-2018学年高三上期中数学真题卷
3 . 已知关于x的不等式
的解集为A.
(1)当
时,求集合A;
(2)若集合
,求a的值;
(3)若
,直接写出a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54113c4b1332cabfd932820343037d20.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546e8cd9cdc519c08ad0df194227c7fb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f37f2f2b7851376587cc6061ed50c35.png)
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4 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,求
在区间
上的最大值和最小值,并分别写出取得最大值和最小值时的x值;
(3)若对任意
,不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef137aef6833c3efa221ff4b7e2be9f0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30a5498bb0236a2bb04ae38329b408.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e82c4003d20b36777f7aea584e3dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
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5 . 已知关于x的不等式
的解集为A,且
.
(I)求实数a的取值范围;
(II)求集合A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5d62831053455632b2c62ae95d50f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46adf2a135d36b7a099b9d010d04f86e.png)
(I)求实数a的取值范围;
(II)求集合A.
您最近一年使用:0次
2016-12-04更新
|
451次组卷
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3卷引用:2015-2016学年北京东城区高一下学期期末数学试卷