解题方法
1 . 已知点
是抛物线
:
上一点,过点P作抛物线
:
的两条切线PM,PN,切点分别为M,N,H为线段MN的中点,F为
的焦点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79a63751d6bfbe2fcb14ffd5a2e24fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5545195ade2bda359e683715332e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.若![]() | B.直线![]() |
C.点H的轨迹方程为![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图,已知抛物线
在点
处的切线
与椭圆
相交,过点
作
的垂线交抛物线
于另一点
,直线
(
为直角坐标原点)与
相交于点
,记
、
,且
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712433026957312/2714531731161088/STEM/b67f6c8f-4fc3-4a5b-9f8a-c09d4ce19dc0.png?resizew=203)
(1)求
的最小值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4428756f1088ce78ed97cbcea99775f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724fd240c60553bffc050d502e9a18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6270bb08b90f72d5671ab8225f356c43.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712433026957312/2714531731161088/STEM/b67f6c8f-4fc3-4a5b-9f8a-c09d4ce19dc0.png?resizew=203)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e86e6f0ac5903369afea2c8d04ba412.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fc44bdd2913504cd806ecbe56fc9fd.png)
您最近一年使用:0次
2021-05-05更新
|
1438次组卷
|
6卷引用:【新东方】高中数学20210429—009【2021】【高三下】
(已下线)【新东方】高中数学20210429—009【2021】【高三下】浙江省杭州市2021届高三下学期4月二模数学试题(已下线)专题11.平面解析几何(解答题)-《2022届复习必备-2021届浙江省高考冲刺数学试卷分项解析》山东省日照市2023届高三下学期4月校际联合考试数学试题广东省深圳市福田区红岭中学2023届高三第五次统一考数学试题辽宁省辽宁师范大学附属中学2023年高三下学期5月月考数学试题
解题方法
3 . 已知
为抛物线
上一点,
是抛物线
的焦点,且
.
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652034433630208/2653191971356672/STEM/33fd3a0394f449a189d1c161b05f7f85.png?resizew=265)
(1)求抛物线
的方程;
(2)过圆
上任意一点
,作抛物线
的两条切线
、
,与抛物线相切于点
、
,与
轴分别交与点
、
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67bc51b970c4de4631cfae93b95cf08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02690b97ac3e14ef6ef5c9a90481782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e9ee9ecec1650a86b25359972c6915.png)
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652034433630208/2653191971356672/STEM/33fd3a0394f449a189d1c161b05f7f85.png?resizew=265)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed550179f5095a2cfd728c882f3ddbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.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/81dea63b8ce3e51adf66cf7b9982a248.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/e53abbd672b82a02c4975f99fbbd2c37.png)
您最近一年使用:0次
解题方法
4 . 如图,已知抛物线
:
(
)的焦点为
,准线为
,
为坐标原点,
为抛物线
上一点,直线
与
交于点
,直线
与抛物线
的另一个交点为
,过点
作抛物线的切线交
轴于点
,与直线
交于点
,连结
.
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652049351852032/2652908411240448/STEM/9d502ed9-0426-45a8-94ae-bab753c47d06.png?resizew=237)
(1)证明:直线
轴;
(2)记
,
的面积分别为
,
,当
时,求点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652049351852032/2652908411240448/STEM/9d502ed9-0426-45a8-94ae-bab753c47d06.png?resizew=237)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162fc72b7e058245d1c70eeea05b7125.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d480e8b2c516612b47a19cb62d9bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8060a00d925f27135a7baff2d0e9d598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
5 . 如图,过抛物线
的焦点F作直线l交C于
,
两点,其中
,设直线
分别与抛物线相切于点A,B,
交于点P.
![](https://img.xkw.com/dksih/QBM/2021/2/3/2650178151555072/2651556791738368/STEM/cb8e9d57-fdac-4ebc-82a8-106b04a0f6f1.png)
(1)若
,求切线
的方程;
(2)过F作y轴的垂线交
于点M,若有且仅有一条直线l使得
,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f22b8dd77db6b39df6dfb8a8b7176ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://img.xkw.com/dksih/QBM/2021/2/3/2650178151555072/2651556791738368/STEM/cb8e9d57-fdac-4ebc-82a8-106b04a0f6f1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4223bd6ee8f82d59d244371fbcddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)过F作y轴的垂线交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94bb461c45e9c18500fbc13111aef9d.png)
您最近一年使用:0次
6 . 已知:抛物线
,曲线
,过
上一点
作
的两条切线,切点分别为
.
![](https://img.xkw.com/dksih/QBM/2021/2/3/2650310066290688/2651388767019008/STEM/21ba9818-eb12-4fc6-a408-3c31f2bc7593.png)
(1)若
,求两条切线的方程;
(2)求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca20463f303eb96b9b0a398d523d42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1081865e1f652838d382f77c8722851a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2021/2/3/2650310066290688/2651388767019008/STEM/21ba9818-eb12-4fc6-a408-3c31f2bc7593.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328aaba77106396d4ca644c8b7a352e0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
名校
解题方法
7 . 已知直线l1,l2分别于抛物线y2=x相切于A,B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/36edbe32-3097-47ed-923e-476843521e57.png?resizew=200)
(1)若点A的坐标为(1,﹣1),求直线l1的方程;
(2)若直线l1与l2的交点为P,且点P在圆(x+2)2+y2=1上,设直线l1,l2与y轴分别交于点M,N,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/36edbe32-3097-47ed-923e-476843521e57.png?resizew=200)
(1)若点A的坐标为(1,﹣1),求直线l1的方程;
(2)若直线l1与l2的交点为P,且点P在圆(x+2)2+y2=1上,设直线l1,l2与y轴分别交于点M,N,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b5a34215542bec52ba524bd6e304ac.png)
您最近一年使用:0次
2021-04-20更新
|
423次组卷
|
7卷引用:2020届浙江省温州市新力量联盟高三上学期期末数学试题
2020届浙江省温州市新力量联盟高三上学期期末数学试题(已下线)专题2.1 圆锥曲线-2020-2021学年高二数学课时同步练(苏教版选修2-1)江西省宁冈中学2020-2021学年高二上学期期中考试数学(理)试题(已下线)第40讲 抛物线的双切线问题-2022年新高考数学二轮专题突破精练江西省赣州市赣县第三中学2021-2022学年高二下学期开学考试数学(理)试题河南省豫西顶级名校2021-2022学年高二下学期4月联考理科数学试题河南省教育联盟2021-2022学年高二下学期4月联考文科数学试题
解题方法
8 . 已知抛物线
:
,圆
:
,直线
:
与抛物线
相切于点
,且与圆
相切于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/805f79e0-e6a6-4995-b399-c37631a668fa.png?resizew=194)
(1)当
,
时,求直线
方程与抛物线
的方程;
(2)设
为抛物线
的焦点,
,
的面积分别为
,
,当
取得最大值时,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be4ca5919e23d17c902a3b09b0f0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80abfb66319c2837713f6bdd1bed028d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a20509d164642d527a3e5c248e555d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/805f79e0-e6a6-4995-b399-c37631a668fa.png?resizew=194)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176754726d2194c890e80df1a1f1c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5666c09fdd41cf808379debef9d3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a255eacfaa1ace1eea7e071aa3a28f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad5a9147b25285124851a61c7d1a24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e0c5a0824a46bbae84695c76c938a4.png)
您最近一年使用:0次
2020-02-18更新
|
529次组卷
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4卷引用:2020届浙江省绍兴市上虞区高三上学期期末数学试题
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名校
9 . 设点
为抛物线
外一点,过点
作抛物线
的两条切线
,
,切点分别为
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/4d08e15b-74b5-4596-a269-0af113564af2.png?resizew=200)
(Ⅰ)若点
为
,求直线
的方程;
(Ⅱ)若点
为圆
上的点,记两切线
,
的斜率分别为
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f5c30dbc462290f8ba3d99342112e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/4d08e15b-74b5-4596-a269-0af113564af2.png?resizew=200)
(Ⅰ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(Ⅱ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648c5d95d6085f0c44d8ca9f7d510661.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/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ff63767e95155f9123fa5c835b627d.png)
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2019-01-21更新
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