题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-60345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-48518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-51887.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-79374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-67345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-51887.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-67345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-60345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-69677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-12953.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-81927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-67345.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-43576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-43540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235608-43576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-60345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-80549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-20304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-36761.png)
(3)经过
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-52018.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-75693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-76404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-36536.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-89983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-67345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-62674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-29714.png)
(2)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-36761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-70117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-79134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235607-60345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-36761.png)
离为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-59449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235610-80438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235611-25834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235611-36648.png)
故所求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-36761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235611-67934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235611-29797.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-75693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235611-87644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235612-52589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235612-87234.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235612-47989.png)
所以经过
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-52018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235612-91108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235612-39121.png)
故其方程为:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235613-27364.png)
化简得:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235613-58453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235613-98799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235613-30317.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235613-40381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235614-42376.png)
所以经过
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235609-52018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235614-63858.png)
解析
核心考点
试题【(本小题满分16分) 已知圆的方程为,直线的方程为,点在直线上,过点作圆的切线,切点为.(1)若,试求点的坐标;(2)若点的坐标为,过作直线与圆交于两点,当时,】;主要考察你对点到直线的距离等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235558-65764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235558-27815.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235559-66566.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235559-53514.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235559-33982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235554-60194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235550-68341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235550-87605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235550-92199.png)
A.8 | B.10 | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235545-47471.png)
A.1个 | B.2个 | C.3个 | D.4个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235538-11320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235538-52029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235538-66012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235539-21757.png)
A.最大值为![]() | B.最大值为![]() | C.最小值为![]() | D.最小值为![]() |
最新试题
- 1西周时期实行“工商食官”制度,这表明当时的手工业和商业[ ]A.由官府控制B.不受官府的干预C.存在官营和私营的
- 2写出下列成语涉及的人物。(1)三顾茅庐 (2)讳疾忌医 (3)老骥伏枥 (4)卧薪尝胆(1)__________
- 3What do I have to do __________ I want to be thinner.[ ]
- 4【题文】建立模型是研究地理问题的重要方法,读图回答题。【小题1】如果该图为大气环流模式,G、H在地球表面,则A.E处气温
- 5下图表示我国北方的一条河流,图中阴影部分代表泥沙淤积而成的沙岛。读完图完成1~2题。1.该沙岛最后将与河的哪岸连接在一起
- 6用数学归纳法证明命题时,某命题左式为,则n=k+1与n=k时相比,左边应添加的项为( )A.B.C.D.+
- 7读非洲某区域图,回答29~30题。小题1:E为纳米布沙漠,它沿非洲西南大西洋海岸延伸2100千米,该沙漠最宽处达160千
- 8Dear Betty,I hope you’re well. I’m on holiday in London with
- 9下列关于一战的叙述,错误的一项是 [ ]A.萨拉热窝事件是
- 10如果你是美国公民,你投票赞成华盛顿为美国历史上最受尊敬总统的理由是( ) A.他的名字与本国首都名字一致B.他是
热门考点
- 1It ______ half an hour on my homework yesterday. [
- 2(1)细胞核分裂时,______的变化最为明显.它的数量在细胞分裂时已经______,在分裂过程中又分为完全相同的两份.
- 3判断题 (正确的在相应空格内选“A”,错误的选“B”。每小题1分,共5分)小题1:正确认识和评价自己的关键是要实事求是,
- 4下列运算正确的是 [ ]A.B.C.D.
- 52013年3月6日腾讯网讯:重庆眼科医院分析眼睛色盲原因.一色盲男子X染色体上的色盲基因传给女儿的概率是( )A.75
- 6在国际单位制中,功率的单位是( )A.千克B.牛顿C.瓦特D.焦耳
- 7如图,在△ABC中,AB=AC,BD是∠ABC的平分线,若∠ADB=93°,则∠A=______度.
- 82011年市人大代表国民经济和社会发展计划、财政预算审查专题培训班于2011年11月21日开班,83位市人大代表参加培训
- 9如图是北京奥运会福娃图,通过平移可将福娃“欢欢”移动到图[ ]A.B.C.D.
- 10下列有关命题的叙述,错误的个数为( )①已知等差数列{an}的前n项和为Sn,则“a6+a7>0”是“S9≥S3”的充