已知曲线
和曲线
交于A,B两点(点A在第二象限).过A作斜率为
的直线
交曲线M于点C(不同于点A),过点
作斜率为
的直线
交曲线
于E,F两点,且
.
![](https://img.xkw.com/dksih/QBM/2020/4/20/2445374506565632/2445660922183680/STEM/855914c060d24856aad3cb9d32b82bd1.png?resizew=146)
(I)求
的取值范围;
(Ⅱ)设
的面积为S,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3550ed39b1a95009cc330c5b7a7ef7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7181e6fb9cbb4d4c3931e813110cce06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dbcf0320d94734aedd3d4e2e31b9827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec7bcf5820dfe70290259c2d7ac1ea5.png)
![](https://img.xkw.com/dksih/QBM/2020/4/20/2445374506565632/2445660922183680/STEM/855914c060d24856aad3cb9d32b82bd1.png?resizew=146)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a673995c42de92069518cdea5bff50.png)
更新时间:2020-04-20 18:12:47
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知圆C:x2+y2﹣4x=0.
(1)直线l的方程为
,直线l交圆C于A、B两点,求弦长|AB|的值;
(2)从圆C外一点P(4,4)引圆C的切线,求此切线方程.
(1)直线l的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633ca9d1d60d8b0ae21510fbf9638753.png)
(2)从圆C外一点P(4,4)引圆C的切线,求此切线方程.
您最近一年使用:0次
【推荐2】已知圆
:
与圆
外切,点
在第一象限,直线
与直线
:
平行,且圆
与直线
相切.
(1)求圆
的标准方程;
(2)若直线
与圆
及直线
从上到下依次交于点
,
,
,当
最小时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09324568f2f3995b2f932e66ee5926ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16a46f03535c5af872fa8fa9f21a431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5d9fef4855834bac40f132970110bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】设抛物线
的焦点为F,直线
与抛物线W相交于A,B两点,点Q为线段AB的中点.
(1)求m的取值范围;
(2)求证:点Q的纵坐标为定值;
(3)若
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01497894422204f9e205d832e21aa29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
(1)求m的取值范围;
(2)求证:点Q的纵坐标为定值;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a601bb181415cf349821d76fc63668.png)
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【推荐2】在平面直角坐标系xOy中,抛物线y2=4x的焦点为F,抛物线上有三个动点A,B,C.
(1)若
,求
;
(2)若
,AB的垂直平分线经过一个定点Q,求△QAB面积的最大值.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2433015c90b8180e71b558c4a26bdb93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeb5389fc5b22cd1dbfa8d11264d877.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd83469d14b32964d938fd8de29ce6d.png)
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