已知命题
:方程
表示焦点在
轴上的椭圆;命题
:双曲线
的离心率
,若
是真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://img.xkw.com/dksih/QBM/2017/2/7/1619489548124160/1619489548640256/STEM/0e0b5184fd654fc99522cc5a705e7def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dd7e9aeab5f879300c09dda6318cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b5c7d5822e7945b618c2b82ebcc339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2017-02-04 15:16:36
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【推荐1】知
有两个不相等的负实根;
不等式
的解集为
为假命题,求m的取值范围.
![](https://img.xkw.com/dksih/QBM/2010/12/31/1569951916752896/1569951922036736/STEM/1dcf955589fe4e91a81ab409ac2271df.png)
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【推荐2】(1)已知命题
:关于
的方程
有实根;命题
:关于
的函数
在
上是增函数,若“
或
”是真命题,“
且
”是假命题,求实数
的取值范围;
(2)已知命题
:
;命题
:
,若
是
的必要不充分条件,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/c68b5ec358614270a3fd716a032d95b0.png)
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/84c686d2737a48ada1f330d7487d2f53.png)
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![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/5b5c7357f38b4224a8522fb430006a9f.png)
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/84c686d2737a48ada1f330d7487d2f53.png)
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/91a10a3319f444a595b6454c8d2a502e.png)
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![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/c68b5ec358614270a3fd716a032d95b0.png)
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/5b5c7357f38b4224a8522fb430006a9f.png)
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/c68b5ec358614270a3fd716a032d95b0.png)
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(2)已知命题
![](https://img.xkw.com/dksih/QBM/2016/11/17/1573154205016064/1573154210725888/STEM/c68b5ec358614270a3fd716a032d95b0.png)
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名校
【推荐1】已知方程
表示的图形是:(1)双曲线;(2)椭圆;(3)圆;试分别求出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ec72e1dcf802300012a3ea7dfac93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知二次曲线
的方程为
.其中
.
(1)分别求出方程表示椭圆和双曲线的条件;
(2)若抛物线
与
共焦点,求抛物线
上的动点
到点
的最小值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94555857a26590865f337f8c4a93c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f219575dd7bb6c3d8912a0d6d81a294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff2aa68223dfc02f39d7d10fa005387.png)
(1)分别求出方程表示椭圆和双曲线的条件;
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a46048fdb79797268ce1dc8faa149b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94555857a26590865f337f8c4a93c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
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名校
【推荐1】已知命题
:
,命题
:“方程
表示双曲线”.
(1)若
是真命题,求实数
的取值范围;
(2)若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cd410af83a4e172bd6b2847f2c3480.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐2】已知p:式子
(a为常数)有意义,q:方程
(k为实数)表示双曲线.若
是p的充分不必要条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a71bf52911c9f2f8d628f70ceca5bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ffee86090895719d40a3b43fa89228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
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