直线
与圆
相交于
,
两点,若
,则
(
为坐标原点)等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b6e44dd054b54f89e7c237eb1428da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b8d8f9a8cb98f0431957a7e15e75a2.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/1c69140c9aaaeb912ebb5c64ca8e15bf.png)
![](https://img.xkw.com/dksih/QBM/2010/5/10/1569724008448000/1569724013395968/STEM/e0b418ab720546c4953adde97d01ff81.png)
![](https://img.xkw.com/dksih/QBM/2010/5/10/1569724008448000/1569724013395968/STEM/e45b95b55f084b18b4a31ec644e74016.png)
A.-2 | B.-1 | C.0 | D.1 |
9-10高一下·辽宁·阶段练习 查看更多[2]
更新时间:2010-05-10 13:03:14
|
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较易
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【推荐1】下列命题正确的是( )
A.若![]() ![]() | B.![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() |
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【推荐2】已知
中,角
的对边分别为
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,且
的面积为6,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐1】把圆
的半径减小一个单位则正好与直线
相切,则实数a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a39ccd33a2ebe0403dc1cee582085d3.png)
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A.-3 | B.3 |
C.-3或3 | D.以上都不对 |
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【推荐2】已知
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的右焦点,以点
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的渐近线相切,则双曲线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a10220fb06a9f6dfb2d2e84d1a4504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次