题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223012-39761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-71858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-83030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-51175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223012-39761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-42925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-30594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-48397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-64739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-83030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-67553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223015-30937.jpg)
(1)求抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223015-25470.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223015-12251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223015-89912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223016-75091.png)
(3)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223016-34840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223016-77292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223016-75218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-85895.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-99550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-59124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-29937.png)
解析
试题分析:(1)由题意知圆心
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-37208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223018-92426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223015-25470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223018-15864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-37208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223018-45215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-14719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-45326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-99550.png)
(2)由题意可知,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-29913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-36640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223020-98543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223020-49461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223020-66402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223020-70402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223020-32491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-17577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-13327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-53086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-55975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223022-68067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223022-20639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223022-76912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223022-83537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223022-22890.png)
(3)由题意可设点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-66825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-58629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-13327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223021-53086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-47730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-44118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-33848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-33625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223017-37208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-43669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-82972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-53563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-70877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-33848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-33625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-75399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-59427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-36640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-16093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223019-36640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-80119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223023-33848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223024-33625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-94754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-36006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-16759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-93297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-75468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-73162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-63699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-75468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-97960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223027-80739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223028-67027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223028-51046.png)
试题解析:(1)∵点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-30594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223028-36715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-67553.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223028-35094.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223012-39761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223028-61685.png)
(2)法一:∵当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-13627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-18632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-74576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-70453.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223030-67262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223030-22306.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223030-14571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223030-91110.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223031-45932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223031-48240.png)
法二:∵当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-13627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-18632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223029-74576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223031-74082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223031-89496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223031-19117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-49482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-48923.png)
联立方程组
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-25210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-29601.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-43678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223033-51217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223033-36360.png)
同理可得
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223033-36975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223033-26685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223034-99522.png)
(3)法一:设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223034-90675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223034-24645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223034-80262.png)
可得,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223032-49482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-75399.png)
同理,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223034-57702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223025-59427.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-94754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223026-36006.png)
∴直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223035-65692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223035-16978.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223035-82796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223035-27378.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-20606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-91429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-91954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-81059.png)
法二:设点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223037-58691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223037-14261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223037-85630.png)
以
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223037-49801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223037-50194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223038-33870.png)
⊙
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223014-30594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223013-51175.png)
①-②得:
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223038-23884.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223038-39690.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223038-42988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223038-23884.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223039-63366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223039-78614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223039-58199.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-20606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223039-82968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-91954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223036-81059.png)
核心考点
试题【如图,已知抛物线:和⊙:,过抛物线上一点作两条直线与⊙相切于、两点,分别交抛物线为E、F两点,圆心点到抛物线准线的距离为.(1)求抛物线的方程;(2)当的角平分】;主要考察你对曲线与方程的应用等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-46932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-51875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-17446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-67855.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-41573.png)
(Ⅱ)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-76169.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-55548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-32075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-36452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-57560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-90654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-66156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223000-79682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223001-78515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222945-63569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222945-38095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222945-98054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222945-76947.png)
(1)求椭圆E的方程;
(2)设P是椭圆E上第一象限内的点,点P关于原点O的对称点为A、关于x轴的对称点为Q,线段PQ与x轴相交于点C,点D为CQ的中点,若直线AD与椭圆E的另一个交点为B,试判断直线PA,PB是否相互垂直?并证明你的结论.
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222933-45980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222933-26540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222933-32586.png)
(1)求椭圆方程;
(2)设椭圆与直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222934-90999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222934-55896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222934-92682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222925-36825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222926-27067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222926-97092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222926-61247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222926-44315.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222927-69551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222927-54289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222927-16215.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222914-71305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222914-56545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222914-91093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222914-74532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222914-92560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-21480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-44777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-21480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-98030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-42135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-39600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-21480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-65297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-44675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-74874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-26448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-74874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-51655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-21252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-91169.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-37944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222915-23420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-89605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-71028.png)
(2)是否存在与
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-71028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-50707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-80607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-50707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-66630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025222916-33590.png)
最新试题
- 1下面是一个七年级学生的“自画像”,你认为有待改进的方面是 [ ]①朝气蓬勃,勇于探索②遇到挫折容易失去信心,悲观
- 2北京大学教授马克壵谈到一场革命时说“……它的斗争对象不是带有封建性质的绝对王权,而是一个新兴的、已经具有了民主化的取向和
- 3My funny friend ______ me ______. [ ]A. makes; to laugh
- 4抛物线y=x2-3x+2与y轴交点的坐标是( )A.(0,2)B.(1,O)C.(0,一3)D.(0,O)
- 52014年4月11日,由中宣部、山东省委联合举办的推广善行义举榜现场会在曲阜召开。山东以善行义举“四德榜”(四德包括个人
- 6(1)求下列各式中的x:①x2-25=0;②64(x+1)3=27;(2)计算:2-1+4-38+(2)0.
- 7What"s this _____Chinese? It is"Dian shi". [ ]A. in
- 8【题文】国宝级名画《清明上河图》被艺术地再现于世博园中国展区的展厅中,传达中国古典城市的智慧。下列情景中可能在画中出现的
- 9-5的相反数是______,它的绝对值是______;到原点的距离为5的点表示的数是______.
- 10设P(x,y)是+=1上一点,则x+y的最小值为__________________.
热门考点
- 1已知△ABC中,AB=3,AC=4,BC=10,则AB•AC等于( )A.-965B.-152C.152D.962
- 2下列过程不属于水的净化的是( )A.吸附B.电解C.过滤D.蒸馏
- 3一个数的绝对值是4,则这个数是______,数轴上与原点的距离为5的数是______.
- 4南京紫金山天文台太阳黑子研究专家向记者表示,太阳黑子活动预计2011、2012年达到峰值。据此回答1~2题:1.在太阳活
- 5下列词语中加点的字,读音全都正确的一组是 ( )A.纤细(xiān)戏谑(xuè) 心宽
- 6观察下面图形,用一句话表达它的含义。(3分)
- 7缝衣针的针头做得尖尖的,是为了______压强,缝厚衣服时手指常常套上顶针,这是为了______压强.
- 8在平面直角坐标系中,将抛物线先向右平移2个单位,再向上平移2个单位,得到的抛物线解析式为A.B.C.D.
- 9如果四边形有一个角是直角,另外三个角度数之比为2:3:4,这三个角的度数各是多少?
- 101801年,英国城市人口占总人口数量的27.5%,这一数字到了1851年变成51%。促使英国城市人口这一时期飞速增长的最