解题方法
1 . 如图,P是直线
上一动点,以P为圆心的圆Γ经定点B(1,0),直线l是圆Γ在点B处的切线,过
作圆Γ的两条切线分别与l交于E,F两点.
(1) 求证:
为定值
(2)设直线l交直线
于点Q,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0038fefa3631a3b3064033ae6606366b.png)
![](https://img.xkw.com/dksih/QBM/2017/8/8/1747568471793664/1747951295881216/STEM/e791b8c1073148c7978576ae0766b6e5.png?resizew=227)
(1) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2843730ec1403be97a27545eca962fe6.png)
(2)设直线l交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e49a7a701fbc3274234126cd30b127.png)
您最近一年使用:0次
2017-08-08更新
|
1160次组卷
|
2卷引用:浙江省杭州市2016-2017学年高二下学期期末教学质量检测数学试题
解题方法
2 . 在
中,已知
,记
且对
,均有
,其中
且
.
(1)求点An的轨迹方程;
(2)求数列
的通项公式;
(3)记
的面积为
,判断
的单调性并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d3a0714637b88c272b42b28fcbbf0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c144cafb6c90358ac7a184661da3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848c94317ad5c0caff5e56e8f8333808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff11bb9d064693dae7fd5619fbddc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01aeac7c6814c59698f25ee258fab35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2c5a06b5c5a9e1ff9a144fae1fc1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149216ad5c79559517560bafa25ccd95.png)
(1)求点An的轨迹方程;
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d3a0714637b88c272b42b28fcbbf0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
您最近一年使用:0次
3 . 如图,已知点
,
,以线段
为直径的圆内切于圆
,点G的轨迹为F.
![](https://img.xkw.com/dksih/QBM/2021/12/19/2876152876630016/2880400184524800/STEM/9279ea51bad64c1680b9e48c63e8f907.png?resizew=195)
(1)求点G的轨迹E的方程;
(2)若轨迹E与x轴的左、右两个交点分别为M,N,过定点
的直线
与轨迹E交于R,S两点,设直线MR与NS交于点
,证明:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9d55173f26afdf0e37462b556a605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be19f9ec16fc625d1e4e87496c08921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://img.xkw.com/dksih/QBM/2021/12/19/2876152876630016/2880400184524800/STEM/9279ea51bad64c1680b9e48c63e8f907.png?resizew=195)
(1)求点G的轨迹E的方程;
(2)若轨迹E与x轴的左、右两个交点分别为M,N,过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574bd8f8732384b03a984e96cb3f27a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次