解题方法
1 . 已知抛物线
的焦点为
,抛物线
的焦点为
,
,A,B,C为
上不同的三点.
(1)求
的标准方程;
(2)若直线
过点
,且斜率
,求
面积的最小值;
(3)若直线
,
与
相切,求证:直线
也与
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4428756f1088ce78ed97cbcea99775f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c9c87eba774f6bc072663d32d11fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e2a53d1a4b083d0f4d0b64ed0d0353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d165046175c70690335c3c8ce97b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3738fa0ab2ac2aa1da705ea85f3b9b21.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
名校
解题方法
2 . 已知曲线.
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da570b85be54e1194ca485d4751abfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed983f366396f988a3090fbf14ce696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①试问是否为定值?若是,求出该定值;若不是,请说明理由.
②若直线与
轴分别交于点
,证明:
.
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解题方法
3 . 已知曲线
与曲线N关于直线
对称,且
的顶点在曲线N上.
(1)若
为正三角形,且其中一个顶点为坐标原点,求此时该三角形的面积;
(2)若
三边所在的三条直线中,有两条与曲线M相切,求证第三条直线也与曲线M相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b56c036703405337652b025fbf57b2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbfc0ce508977423897abed5933856f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbfc0ce508977423897abed5933856f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbfc0ce508977423897abed5933856f.png)
您最近一年使用:0次
2023-03-01更新
|
818次组卷
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4卷引用:湖南省株洲市2023届高三下学期一模数学试题
湖南省株洲市2023届高三下学期一模数学试题(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题17-22专题20平面解析几何(解答题)(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题17-22
名校
4 . 如图,已知
和抛物线
是圆
上一点,M是抛物线
上一点,F是抛物线
的焦点.
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735096321589248/2735881169477632/STEM/8efff9db-ef21-4bae-9de0-f271f0870ffd.png?resizew=181)
(1)当直线
与圆
相切,且
时,求
点的坐标;
(2)过P作抛物线
的两条切线
分别为切点,求证:存在两个
,使得
面积等于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77208a2d8eef1856d213fde4b88805f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451e94c94277ef7d8e74f3dfef159880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735096321589248/2735881169477632/STEM/8efff9db-ef21-4bae-9de0-f271f0870ffd.png?resizew=181)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ced5c43c74f54a3a7ceb1bdf6260a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过P作抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270dcf5882716678ef574e71273e0a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
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2021-06-04更新
|
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5卷引用:浙江省杭州市高级中学2021届高三下学期高考仿真模拟数学试题
浙江省杭州市高级中学2021届高三下学期高考仿真模拟数学试题宁夏回族自治区银川一中2022届高考三模数学(理)试题福建省厦门双十中学2022届高三下学期高考热身考试数学试题江西省泰和中学2021-2022学年高二上学期第一次段考数学(理)试题(已下线)第4讲 圆锥曲线中的最值、范围、存在性问题(练)-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)
5 . 已知抛物线
的顶点为坐标原点,焦点为圆
:
的圆心,
轴负半轴上有一点
,直线
被
截得的弦长为5.
(1)求点
的坐标;
(2)过点
作不过原点的直线
,
分别与抛物线
和圆
相切,
,
为切点,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5384def07c4e8eb159c899bc4ab7752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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)
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2021-05-02更新
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601次组卷
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3卷引用:海南省天一大联考2021届高三第4次模拟考试试题