名校
解题方法
1 . 已知直线
,其中
是公差为5的等差数列
的第
项,在直角
中,
,则
面积的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328aa79961d8a3d8251480d4f717228a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7bf13a408071d4d92f86c22ec78108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.2 | B.1 | C.![]() | D.![]() |
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2 . 若直线l1:y=kx与直线l2:x-y+2=0平行,则k=________ ,l1与l2之间的距离是______ .
您最近一年使用:0次
解题方法
3 . 已知双曲线
的离心率为
,实轴长为2,实轴的左端点为
,虚轴的上顶点为
为右支上任意一点,则
面积的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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