在平面直角坐标系
中,已知抛物线
,直线
过抛物线的焦点,直线
与抛物线交于
,
两点,弦
长为6,则直线
的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
更新时间:2022-12-07 09:04:34
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适中
(0.65)
【推荐1】已知函数
的图象在
处的切线经过坐标原点,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ddb2cabc0a07df420f66a1adb4bdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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名校
【推荐2】如图,把直线
绕着它与直线
的交点,沿着逆时针方向旋转
,得到的直线方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d230c11741700260723b295ca90e873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/c4ef7096-fa44-45cc-8fa4-c98c951e7a6b.png?resizew=139)
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解题方法
【推荐1】连接抛物线
的焦点F与点
所得的线段与抛物线交于点A,设点O为坐标原点,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661bd8d4d82205bd311e7349ae91f602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a314a533f9cbac7decd9dc155d8d33f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05cae179f0a416e85adf3a26806c776.png)
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解题方法
【推荐2】已知抛物线
:
的准线被圆
:
截得的弦长为4,则抛物线
的方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4c34d75e14df81f4692e31492a6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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【推荐1】在极坐标系中,直线
的极坐标方程为
,设抛物线
的参数方程为
(
为参数,
),其焦点为
,点
(
)是抛物线
上一点,圆
与线段
相交于点
,且被直线
截得的弦长为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4845668dd7d5dcd7225a1d5e3c03c411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d33ad04959ff0d34b542735b3a039c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001d669ea662b9ba455c24242eb94af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b16e01339a23ea39ef89f83678a05d9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94367c41f40b35088f9ab3b84f3a37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f1910e33366264f9792949e097410d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
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解题方法
【推荐2】抛物线
截直线
(t为参数)所得的弦长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5590fa7c70bd0a95eb7179a39d2157f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6602070319173c885d9123e1befe5a9.png)
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