名校
解题方法
1 . 已知命题
:方程
表示焦点在
轴上的椭圆;命题
:
;命题
:
.
(1)若命题
与命题
互为充要条件,求实数
的值;
(2)若命题
是命题
的必要不充分条件,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9cf53ce11d184ef254ab7592a08153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008e97c8a4ded8c03f8f25538275a071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078c3c36713d840d76f833f02aca8c5b.png)
(1)若命题
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-08-17更新
|
131次组卷
|
2卷引用:江苏省南通市西亭高级中学2020-2021学年高二上学期第二次阶段检测数学试题
解题方法
2 . 已知
,
,
.
(1)若
是
的必要不充分条件,求
的取值范围;
(2)若
是
的必要条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f218ded09e90e11571a9ba1791eaeb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82fb110115d5c521deba5cf1f6cc8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41dca95e8a0f39fb734a9041ea59da44.png)
(1)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/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-11-13更新
|
218次组卷
|
3卷引用:广西贵港市秋季期2020-2021学年高中二年级期中教学质量检测数学试题
10-11高三·宁夏银川·阶段练习
名校
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2610f13c3e564cec18350db61ed4d9.png)
(I)是否存在实数
,使
是
的充要条件,若存在,求出
的范围;若不存在,请说明理由;
(Ⅱ)是否存在实数
,使
是
的必要条件,若存在,求出
的范围;若不存在,请说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2610f13c3e564cec18350db61ed4d9.png)
(I)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-03-03更新
|
717次组卷
|
7卷引用:2015-2016学年广西钦州港经济技术开发区中学高二上期末理科数学卷