题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170614-86977.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170614-70460.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170615-53108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170615-65801.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170615-87154.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170615-92232.gif)
(2)求线段C
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170615-79824.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170616-14874.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170616-71776.gif)
(2)线段CD长度的最小值为2
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170616-92654.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170617-74642.gif)
可得
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170617-98193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170617-41676.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170617-16363.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170617-18968.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170616-71776.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170618-61194.gif)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170618-94087.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170618-46832.gif)
而
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170618-30901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170619-30040.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170619-54427.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170619-76395.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170619-99477.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170619-62501.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170620-68983.gif)
核心考点
试题【(本小题12分)直线与轴和轴分别交于A,B两点,直线和AB,OA分别交于点C,D,且平分的面积。(1)求的值;(2)求线段CD长度的最小值。】;主要考察你对直线方程的几种形式等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170610-12347.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170607-63465.gif)
A.AB<0,BC<0 | B.AB>0,BC<0 | C.AB<0,BC>0 | D.AB>0,BC>0 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170603-76119.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170557-60919.gif)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170557-90388.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170557-12449.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170557-23451.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170558-30920.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170548-90561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170548-35782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170548-50073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170548-76962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170548-17231.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022170549-49479.gif)
最新试题
- 1—Are you satisfied with her answer? —Not at all. It couldn’t
- 2我国是一个统一的多民族国家,各民族“大杂居,小聚居”。下表中两张少数民族风情邮票。①-⑤是关于这两个民族自治区地理特征的
- 3下列关于氧化物的叙述中,正确的是( )A.酸性氧化物都能与水化合生成酸B.碱性氧化物都能与水化合生成碱C.碱性氧化物一
- 4He _____ cards with his friends, but now he _____ a walk aft
- 5程序框图如右图所示,该程序运行后输出的值是( )A.3B.4C.5D.6
- 6如图,在四棱锥P-ABCD 中,PD⊥底面ABCD ,底面ABCD为正方形,PD=DC,E 、F 分别是AB、PB的中点
- 7如图所示,一艘测量船将一束超声波垂直向海底发射,测出从发射超声波到接收反射回波所用时间是4s,巳知声音在水中的传播速度是
- 8Recently a Beijing father sent in a question at an Internet
- 9通常我们所吃的糖,其主要成分是蔗糖(化学式为C12H22O11),蔗糖的溶解度为179g,100℃时蔗糖的溶解度为487
- 10Next year Tom will go to school. He wants to be en
热门考点
- 1“钙片”可以促进青少年骨骼发育,这里的“钙”应理解为( )A.元素B.离子C.原子D.分子
- 214~18世纪,在欧洲大陆先后掀起了两次思想解放运动。这两次思想解放运动指的是什么?(2分)他们的思想核心是什么?(2分
- 32010年3月,有关“地沟油”回流餐桌的报道被媒体反复热炒。“地沟油”流入餐饮行业的相关报道在网上引起轩然大波,公众对此
- 4老舍的著名话剧《茶馆》中有一位秦二爷,他在19世纪末致力于投资近代工业。当时,秦二爷投资近代工业的有利条件不包括[
- 5解方程组:。
- 6下列各句中,没有病句的一项是[ ]A.河南开封县陈留四中学生李盟盟,今年高考565分。因县招办失职把她的志愿申请
- 7综合性学习(6分)小题1:、你经过小学六年的学习,现在来到了你梦寐以求的中学,老师同学都希望尽快地了解你,你同样也希望尽
- 8阅读理解。 A lift is wonderful. It is really only a small roo
- 9目前,化石燃料是人类生产、生活的主要能源。随着全球能源使用的增长,化石燃料等不可再生能源将日趋枯竭。世界各国人民的节能意
- 10“不关爱集体的人不用”,这是一家世界500 强企业招聘员工时的首要要求。对此,看法不正确的是[ ]A.只有关爱集