若关于x,y的方程
表示的是曲线C,给出下列三个条件:①若曲线C是椭圆,②焦点在y轴上,③焦点在x轴上.请选择其中2个条件与已知组成命题,并求出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c5827d9c08e662be0f01bd36cd70009.png)
22-23高二上·全国·课后作业 查看更多[2]
更新时间:2023-07-04 12:52:41
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【知识点】 根据方程表示椭圆求参数的范围
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【推荐1】已知命题
:点
在圆
的内部;命题
:“曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
表示焦点在
轴上的椭圆”.若“
且
”是真命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6114ce586d4468f1b83c85bf029ba625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d354a888a4a5ba24fceb5d8a2b578f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6dfbf098eed2f7058d0af24c497bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](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)
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【推荐2】已知命题p:
在
上单调递增;命题q:方程
表示焦点在y轴上的椭圆;若
为真,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741eacea2df230274df3d8493b8f6805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adb9ed6e85993172051f0aa8e03eae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2f4e27d0b5e39a967035a75215dce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97842fd0ea2ea493566e5b4e363daa5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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