名校
1 . 若对一切
,复数
的模始终不大于2,则实数a的取值范围是_______ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08765ca276afa9296f1caa76bd083e86.png)
您最近一年使用:0次
2014·江苏连云港·二模
名校
解题方法
2 . 在平面直角坐标系
中,已知点
在圆
:
内,动直线
过点
且交圆
于
,
两点,若
的面积的最大值为
,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bfdb562fbd129ffc213acdfa2f9327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1adad76775eef272fe3e3d1fc56b4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-04-22更新
|
111次组卷
|
6卷引用:2014届江苏省连云港市高三3月第二次调研考试理科数学试卷
(已下线)2014届江苏省连云港市高三3月第二次调研考试理科数学试卷(已下线)2014届江苏省连云港市高三3月第二次调研考试文科数学试卷2015届江苏省如东高中高三上学期周练六理科数学试卷2015届湖北武汉华中师大附中高三上学期期中理数学试卷(已下线)《2018届优等生百日闯关系列》【江苏版】专题一 第五关 以圆或隐圆为背景的填空题四川省绵阳市绵阳南山中学2019-2020学年高二上学期9月月考数学试题
解题方法
3 . 在平面直角坐标系
中,已知直线
与
轴、
轴分别交于
、
两点,点
在圆
上运动,若
恒为锐角,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6561d9785ddc7496a2e242810e54980c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
4 . 若圆
的方程为
,且
,
两点中的一点在圆
的内部,另一点在圆
的外部,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf592eb0e71710d57f976fb9a03a32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f1b0d832c460dfe3043528e0220e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02af485e17e7628fd5a3ace6e0a32ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
5 . 已知点
为圆
外一点,圆M上存在点T使得
则实数
的取值范围是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf7ab1b7833025bb746854f95799637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35c7ee12d119c8abb17a774ce3bce91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
797次组卷
|
6卷引用:2015届江苏省无锡市高三上学期期末考试理科数学试卷
2015届江苏省无锡市高三上学期期末考试理科数学试卷2015届江苏省无锡市高三上学期期末考试文科数学试卷2015届浙江省高三第二次考试五校联考文科数学试卷(已下线)黄金30题系列 高三年级数学江苏版 小题好拿分【提升版】(已下线)《2018届优等生百日闯关系列》【江苏版】专题一 第五关 以圆或隐圆为背景的填空题黑龙江省大庆市东风中学2021-2022学年高二上学期期中数学试题
6 . 已知点
,圆
点
是圆
上任意一点,若
为定值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589402e5266963ba0ed077618c22212e.png)
![](https://img.xkw.com/dksih/QBM/2015/6/10/1572121164242944/1572121170132992/STEM/e6aac452aa724f56ae1b2e5136aac912.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccc2f02416db8211128e18af2d13ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
7 . 点
在圆
上,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818317907bca8ba3b11274e42e01a331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
592次组卷
|
2卷引用:2015-2016学年江苏启东中学高二上学期期中文科数学试卷
2018高二上·全国·专题练习
8 . 已知方程
,若点
在此方程表示的曲线上,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dd26b17eeb4848b853e0e0430c8238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e223bd8e9d84e01a5353fc97da3960fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2018高二下·全国·专题练习
9 . 已知点
在圆
:
上,点
在双曲线
上,则
,
两点之间的距离的最小值为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ecf7a6913d90c2df051d608011cc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
10 . 若抛物线
(
)的焦点在圆
内,则实数
的取值范围是 .
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572020440006656/1572020445708288/STEM/14aa3f8254cf49e79f8d78a85c0b189d.png?resizew=65)
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572020440006656/1572020445708288/STEM/ea388679403a469494c051e7edaa57b9.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572020440006656/1572020445708288/STEM/50aef8e52d2e47ddbf65ad5ea15b60f2.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572020440006656/1572020445708288/STEM/13ebd90cba1545c097c6df6bf3f88a0c.png?resizew=17)
您最近一年使用:0次
2016-12-03更新
|
450次组卷
|
2卷引用:2015届上海市普陀区高三上学期质量调研理科数学试卷