题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-38773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-97573.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-90318.gif)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-90318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-58097.gif)
设圆的方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043226-25693.gif)
圆经过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-38773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043225-97573.gif)
所以有
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043226-96679.gif)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043226-70185.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043226-33524.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043226-96697.gif)
所以圆的方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043227-28270.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043227-70111.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043219-38990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043219-99413.png)
A.是圆心 | B.在圆上 | C.在圆外 | D.在圆内 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043213-97016.png)
A.4x+3y=0 | B.4x-3y=0 |
C.4x-3y=0或x=3 | D.4x+3y=0或x=3 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043210-64885.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-91131.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-62139.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-30893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-61843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043206-67517.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-91131.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043205-30893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043206-67517.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043200-66398.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043200-25859.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043200-86682.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043201-57617.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043201-51770.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043201-38622.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043200-66398.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023043201-57629.gif)
最新试题
- 1 如图所示静电喷漆示意图,同喷漆K喷出的油漆,形成带负电的雾状液滴(初速可忽略不计),经a与K间的电场加速后奔向阳极a
- 2二次函数y=x2-2x+2与y轴交点坐标为( )A.(0,1)B.(0,2)C.(0,-1)D.(0,-2)
- 3下列化学反应中,既不属于分解反应,又不属于化合反应的是( )A.过氧化氢→水+二氧化碳B.硫+氧气→二氧化硫C.甲烷+
- 4已知:,α⊥γ,β⊥γ,b∥α,b∥β.求证:a⊥γ且b⊥γ.
- 5已知y = f (x)是定义在[–1,1]上的奇函数,x∈[0,1]时,f (x) =.(1)求x∈[–1,0)时,y
- 6当晨昏线(圈)与经线圈重合时,下列叙述正确的是A.北半球各地昼长夜短B.全球各地昼夜等长C.太阳直射北回归线D.南半球各
- 7已知向量a=(1, 2, 3), b =(-2,-4,-6),|c|=,若(a+b)·c=7,则a与c的夹角为( )A
- 8有一种石灰石样品的成分是CaCO3和SiO2。课外小组同学将100g盐酸分5次加入到35g该石灰石样品中(已知SiO2不
- 9如图是小明同学在家中拍到的一张电能表照片,这个电能表的额定最大电流是 ______A,拍照片时,小明家已消耗的电能为 _
- 10不同区域的形成因素不同,区域特征相差也很大,图1为我国四个不同区域的相对位置,据此回答问题。小题1:甲区域和乙区域相比,
热门考点
- 1在东亚五国中,属于“岛国”的是( )A.韩国B.朝鲜C.蒙古国D.日本
- 2—I don"t like fish _______ chicken. What about you? —I don"t
- 3She will _______her hometown after finishing her studies.[
- 4下列命题为复合命题的是( )A.12是6的倍数B.12比5大C.四边形ABCD不是矩形D.a2+b2=c2
- 5如图所示,圆形玻璃砖放在水平桌面上,圆心为O,半径为R,激光束垂直OB射向玻璃砖,入射点在C点时,出射光线在桌面上形成的
- 6-- __________office equipment been fixed yet?--- Yes, we hav
- 7在各项均为正数的等比数列中,则( )A.4B.6C.8D.
- 8These are my __________.A.motherB.fatherC.parentD.parents
- 9已知万有引力公式,其中G是____________常量,该常量是由英国物理学家____________(选填“法拉第”或
- 10实验室使用显微镜观察的顺序是:取镜和安放,______,观察,收镜,整理实验台.