(1)已知函数
,解不等式
;
(2)光线沿直线
射入,遇直线
后反射,求反射光线所在的直线方程. (把最后结果写成直线的一般式方程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c2e033105f17e4ea375d28464413ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
(2)光线沿直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1063988b8cc085f7e20bb239ddb026f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51adafae7329580e7301e97614d5a3ca.png)
更新时间:2019-01-18 21:49:05
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相似题推荐
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】一束光线从点
出发,经直线
上一点
反射后,恰好穿过点
.
(1)求点
的坐标;
(2)求以
,
为焦点,且过点
的椭圆的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47c0db83f935c93d03e127dc37014ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知圆
过点
,
,且圆心
在直线
:
上.
(1)若从点
发出的光线经过直线
反射,反射光线
恰好平分圆
的圆周,求反射光线
所在直线的一般式方程;
(2)若点
在直线
上运动,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429efe96d68065e7d433c996682791d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94fcf57347aec685a8fca271aba14eb.png)
(1)若从点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2a5c155717f3a59d7818b4bbdf44e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1d8d5cea065075fe50706abe3ae802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c6a29805f1cd031ca6efc09f29cd7e.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐1】已知
,
.
(1)求证:
;
(2)若不等式
对一切实数
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f9223bc24df8d429d743692fff7c06.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42de8d23944368ba26d823b47b1286f9.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e9d97b32d81b2de1765613b413ebe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-问答题
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适中
(0.65)
【推荐2】已知
,关于
的不等式
的解集不是空集,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2013/9/2/1571337050324992/1571337056460800/STEM/5b29f0a8321e404c8677f78df2692398.png)
![](https://img.xkw.com/dksih/QBM/2013/9/2/1571337050324992/1571337056460800/STEM/258c4605cfb14f13817694db3cd1d2f5.png)
![](https://img.xkw.com/dksih/QBM/2013/9/2/1571337050324992/1571337056460800/STEM/54f8c685376b4e3a8564f85bbfcceea1.png)
![](https://img.xkw.com/dksih/QBM/2013/9/2/1571337050324992/1571337056460800/STEM/f5d11b42e2084d29845f36c007e9442c.png)
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