在平面直角坐标系下,曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
(
为参数),曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf1bce17440e83c1b735d2954010a2a.png)
(
为参数).若曲线
、
有公共点,则实数
的取值范围_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a407ab82329b4783111cf1d9e950984.png)
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2010·广东汕头·一模 查看更多[2]
更新时间:2016-12-01 19:41:03
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【推荐1】在平面直角坐标系
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交于A,B两点,若钝角
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【推荐2】以双曲线C:
的一个焦点F为圆心的圆与双曲线的渐近线相切,则该圆的面积为________ .
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【推荐1】在直角坐标系
中,直线
的参数方程是
(
为参数),以坐标原点为极点,
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的圆心到直线
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【推荐2】在直角坐标系
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【推荐3】已知在平面直角坐标系xOy中,圆C的参数方程为:
(
为参数),以Ox为极轴建立极坐标系,直线l的极坐标方程为:
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