1 . 如图,已知抛物线的方程为
,过点
作直线
与抛物线相交于
,
两点,点
的坐标为
,连接
,
.设
,
与
轴分别相交于
,
两点.如果
的斜率与
的斜率之积为
,则
的大小等于
![](https://img.xkw.com/dksih/QBM/2017/3/30/1654877685317632/1654885327060992/STEM/4d46d222face4fd9950500bd54ec838a.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71885f023172807ad43f2c9a670aa960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44d9f2b82b73e7a0917a19f74dbc5f9.png)
![](https://img.xkw.com/dksih/QBM/2017/3/30/1654877685317632/1654885327060992/STEM/4d46d222face4fd9950500bd54ec838a.png?resizew=191)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2017-03-30更新
|
1290次组卷
|
6卷引用:2017届辽宁省盘锦市高级中学高三下学期第二次高考模拟考试数学(理)试卷
2 . 已知方程(m2﹣2m﹣3)x+(2m2+m﹣1)y+6﹣2m=0(m∈R).
(1)求该方程表示一条直线的条件;
(2)当m为何实数时,方程表示的直线斜率不存在?求出这时的直线方程;
(3)已知方程表示的直线l在x轴上的截距为﹣3,求实数m的值.
(1)求该方程表示一条直线的条件;
(2)当m为何实数时,方程表示的直线斜率不存在?求出这时的直线方程;
(3)已知方程表示的直线l在x轴上的截距为﹣3,求实数m的值.
您最近一年使用:0次
2016-12-04更新
|
1331次组卷
|
3卷引用:2015-2016学年辽宁省大连二十中高一上学期期末数学试卷
10-11高二下·辽宁抚顺·期末
名校
3 . 已知直线过
两点,且倾斜角为
,则
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74216652d5b7e5c3ef55b9367908017e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.3 | B.![]() | C.5 | D.![]() |
您最近一年使用:0次