题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223505-67949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-30465.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-39878.png)
(Ⅰ)求点G的轨迹
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-53419.png)
(Ⅱ)圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-26253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-58216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-53419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-60166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-48747.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-69387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-11653.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-53419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-21055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-98906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-79629.png)
解析
试题分析:(Ⅰ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-27449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-87748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-53419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-21055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-26253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-82526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-67134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-94283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-69387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-52765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-11653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-11653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-71617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-71617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-21055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-60656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-14615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-20377.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-14615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-60656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-14615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-11653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223511-93469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223512-52358.png)
试题解析:(Ⅰ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-27449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-87748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223512-91292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-98906.png)
化简得动点G的轨迹
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-53419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-21055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-98906.png)
(未注明条件“
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-98906.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-71617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223506-26253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223509-67134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223510-94283.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223512-71495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-14037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-16360.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223507-69387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-65123.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-35132.png)
由于
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-74309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223513-16360.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223508-79629.png)
核心考点
试题【已知点,,直线AG,BG相交于点G,且它们的斜率之积是.(Ⅰ)求点G的轨迹的方程;(Ⅱ)圆上有一个动点P,且P在x轴的上方,点,直线PA交(Ⅰ)中的轨迹于D,连】;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/20191025/20191025223452-77107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223452-69770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223453-44899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223453-95597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223453-78372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223453-54132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223453-54132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223454-24821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223454-32955.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223454-79906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223454-66632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223455-68538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223455-61576.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223439-19624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223440-57005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223440-29721.png)
(1)求椭圆C的标准方程;
(2)线段
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223440-86156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223440-80564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223441-35378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223441-46704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223441-63979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223427-34148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-93491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-17430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223427-34148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-67634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-43481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223427-34148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-21253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-21253.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223427-34148.png)
(Ⅱ)已知
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223428-12172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223427-34148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223429-74047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223429-99241.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223429-21642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223429-28926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223429-72757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223405-84388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-61578.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-95405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-27440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-15779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-27440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-46467.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223405-84388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-27440.png)
(Ⅱ)已知过点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-15779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-14425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223405-84388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-68405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223406-27440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-88986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-14425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-88986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223408-86265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223407-14425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-84226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-12257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-38202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-31469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-84226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223358-38202.png)
(1)求动圆心P的轨迹
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223359-99231.png)
(2)若过D点的斜率为2的直线与曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223359-99231.png)
(3)过D的动直线与曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025223359-99231.png)
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