1 . 已知命题
:“关于
,
的方程
表示圆
”,命题
:“实数
满足
”.
(1)若
为真命题,求实数
的范围;
(2)若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5343e8dbff3957f8d8accf4f107fa3ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18418e248b937ae244090ef5abab40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff66a0c8e85cba9eea32d4c0356198f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9bbb2e27018cffbe32bdd266daff6a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2 . 下列四个命题:
①直线
的斜率
,则直线
的倾斜角的范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9a19f4d4f7247b12273001203f496e.png)
②直线
与过
,
两点的线段相交,则
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255b750ea152997d71789b6c4fe97b25.png)
③直线
与椭圆
恒有公共点,则
的取值范围是
;
④方程
表示圆的充要条件是
或
;
正确的是___________________ .
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2157c1d1295e762906ef99295ade2b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9a19f4d4f7247b12273001203f496e.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8796f6d3e7a0e3771f83df47e99a970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30ca15af0d5cbd9c45b2453a733810b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee751687aa1765a8ddfa07afa62c0e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255b750ea152997d71789b6c4fe97b25.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69ec38733804bf84d2ab76545802439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e030e40306ef61056e68956d0fbcef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c944c1c2791f64d1f371d43e9a419983.png)
④方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a52f8e6287412bdad953624e54da68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4069fbdedefbeffaf4bb806c91d348a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
正确的是
您最近一年使用:0次
名校
3 . 下列五个命题:①直线
的斜率
,则直线
的倾斜角的范围是
;②直线
:
与过
,
两点的线段相交,则
或
;③如果实数
,
满足方程
,那么
的最大值为
;④直线
与椭圆
恒有公共点,则
的取值范围是
;⑤方程
表示圆的充要条件是
或
;正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2157c1d1295e762906ef99295ade2b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e92b870d09ca5fefc684cf38c719314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8796f6d3e7a0e3771f83df47e99a970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30ca15af0d5cbd9c45b2453a733810b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee751687aa1765a8ddfa07afa62c0e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255b750ea152997d71789b6c4fe97b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bcf46f1bb0d01620c1cbe79beece42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e030e40306ef61056e68956d0fbcef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d191d6de821fbb06a51b5a20112db6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a52f8e6287412bdad953624e54da68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4069fbdedefbeffaf4bb806c91d348a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
A.②③ | B.③④ | C.②⑤ | D.②③⑤ |
您最近一年使用:0次
4 . 已知圆方程:
.
(Ⅰ)求
的范围;
(Ⅱ)求圆心到直线
的距离的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377884f9aeebf547cadbb2846d4ddd92.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)求圆心到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3035532a9da096af02dc969d82271d5c.png)
您最近一年使用:0次