题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-60621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-48626.gif)
(1)证明:不论
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-99676.gif)
(2)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-75452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-78546.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-70375.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-90648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-19990.gif)
解方程组
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012950-60732.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012950-47414.gif)
∴直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-75452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012950-74439.gif)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012950-34077.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012950-74439.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012951-13877.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012951-39755.gif)
∴A(3,1)在圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-78546.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-75452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-78546.gif)
即不论
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-99676.gif)
(2)当直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-75452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-78546.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012951-50212.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012951-60609.gif)
得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012948-75452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012951-89817.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012949-70375.gif)
核心考点
举一反三
(2)过点C做CD⊥AB于点D,求CD所在直线的方程.
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012943-54004.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-57866.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-67930.gif)
(1)试求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-84010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-57866.gif)
(2)求与满足(1)中条件的圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-57866.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012938-17205.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-78230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-23342.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-58415.gif)
(Ⅰ)求圆C的方程;
(Ⅱ)若过点D(0,
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-78230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-95279.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-30911.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012931-95279.gif)
(1)若点D(
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012925-89657.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012925-92683.gif)
(2)当点D在y轴上运动时,求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012925-92683.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-27647.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-41938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-69055.gif)
(Ⅰ)求椭圆C的标准方程;
(Ⅱ)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-66870.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-56400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-86233.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-86233.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-52234.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-69156.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023012916-66870.gif)
最新试题
- 1下列说法中不正确的是( )A.1Kg棉花和1Kg的铁质量一样大B.一杯水结成冰后,体积增大,质量不变C.玻璃杯打碎后,
- 2下列对卤化氢的叙述不正确的是( )A.它们都是无色气体,在潮湿的空气中都可形成白雾B.它们都易溶于水,其水溶液都是挥
- 3Let Mary ____ a look.A. to have B. having C. has D.
- 4⊙O1与⊙O2的半径分别为2和5,当O1O2=2.5时,两圆的位置关系是( )A.外切B.相交C.内切D.内含
- 5下列曲线能正确表示人体内酶的催化效率与温度的关系是( )
- 6鸡兔同笼,上有头20个,下有腿50条,可知鸡和兔的数量分别为[ ]A. 5和15 B.15和5 C.12和8 D
- 7椭圆+=1(a>b>0)的两顶点为A(a,0),B(0,b),且左焦点为F,△FAB是以角B为直角的直角三角
- 8用A型、B型标准血清,对10人进行血型鉴定,其中有6人与A标准血清发生凝集反应,有2人与两种标准血清都有凝集反应,有1人
- 9---______ you able to run faster than Peter? --- Oh, I’m
- 10往保温瓶里灌开水的过程中,听声音就能判断壶里水位的高低,因为: [ ]A.随着水位升高,音调逐渐升高。 B.随着
热门考点
- 1珠江三角洲地区在“前店后厂”模式中所担负的作用是 A.从事产品制造和开发B.进行产品加工和装配C.进行市场推广和对外销售
- 2当你贫穷吃惯了草根绿叶的时候,你会感到肉是美味的,当你富有吃惯了大鱼大肉的时候,在偶尔一天吃到绿叶的时候,你又会觉得绿叶
- 3读某地气温和降水量图,完成1~3题。1.判断该气候类型是[ ]A.高原山地气候B.亚热带季风气候C.地中海气候D
- 4Today I am not feeling ____________.A. good B. well C.
- 5的相反数是( )。
- 6轮船往返于一条河的两码头之间,如果船本身在静水中的速度是固定的,那么,当这条河的水流速度增大时,船往返一次所用的时间将(
- 7全球化使世界日益成为一个相互依存的整体,文明与野蛮成为人类共同面临的困扰。
- 8下列属于自觉履行义务的是[ ]①把家中的抽水马桶改成节水式的 ②帮助朋友隐瞒过错 ③孝敬父母,帮父母做力所能及的
- 9科学记数法a×10n中a的取值范围为 [ ]A.0<|a|<10B.1<|a|<10C.1≤|a|<9D.1≤
- 10“如果你有一个苹果,我有一个苹果,彼此交换,我们每个人仍只有一个苹果;如果你有一种思想,我有一种思想,彼此交换,我们每个