解答题-证明题 较难0.4 引用2 组卷734
矩形
的中心在坐标原点,边
与
轴平行,
=8,
=6.
分别是矩形四条边的中点,
是线段
的四等分点,
是线段
的四等分点.设直线
与
,
与
,
与
的交点依次为
.
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/57f1591ebeb842f19cbd763b71f91200.png)
(1)以
为长轴,以
为短轴的椭圆Q的方程;
(2)根据条件可判定点
都在(1)中的椭圆Q上,请以点L为例,给出证明(即证明点L在椭圆Q上).
(3)设线段
的
(
等分点从左向右依次为
,线段
的
等分点从上向下依次为
,那么直线
与哪条直线的交点一定在椭圆Q上?(写出结果即可,此问不要求证明)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/435b32cf5c70495d8a9d4ae686403b4e.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f9e9f76a62c94107aede2953c25c254a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/6759f0b6901340f8b45b2dd7c9b0f686.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f9e9f76a62c94107aede2953c25c254a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/0944b5e4d0eb448480b8a5ed7701764f.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/8b4d9f94de0845cca892771d54aaa380.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/4af4218c3ee24fa2a45bc052a533e366.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/86c3196595864ed987d9176ce60110d3.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/1c89e7ef630a4caebd00a40541db89e2.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/52b21f978fec4d919d0ce9514f5c5c6a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/7cf316df36354570b9695d8b198bc600.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/1ec51823a90b49449b4cb9df6d8e6d8a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/4dd956b823c240a6aee2a935734e2b45.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f24db0921c334e5f9d168df0f09a7da8.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a40af3c63639460a8bd0aa73dc5c35a6.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/e163e696296f496c807f6906f549a775.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ff27d02022384d009917f6cdb1641ce6.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/57f1591ebeb842f19cbd763b71f91200.png)
(1)以
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/22b901d8dabe44fd9eab93ed4dc7aa4d.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ec4d271858b64924b9da55af5ca50212.png)
(2)根据条件可判定点
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ff27d02022384d009917f6cdb1641ce6.png)
(3)设线段
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/86c3196595864ed987d9176ce60110d3.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a850fcc7040e43a3b14bd41677fb5a13.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/9583e5aee617486aa2d5793549fbd241.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/5e49a32f835f41aa875bc23536562cf0.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/52b21f978fec4d919d0ce9514f5c5c6a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a850fcc7040e43a3b14bd41677fb5a13.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a961e17883464621a631d89b586232bf.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/b5b5ffc22ad344929af9d7d5b7f748d4.png)
13-14高二上·安徽池州·期中
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