名校
解题方法
1 . 已知平面
平面
,直线
平面
,直线
平面
,
,在下列说法中,
①若
,则
;②若
,则
;③若
,则
.
正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d983307d4345e724d9dd44935274843d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b02e0c74a66739bc83f73b5c5513cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
正确结论的序号为( )
A.①②③ | B.①② | C.①③ | D.②③ |
您最近一年使用:0次
2020-03-07更新
|
395次组卷
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3卷引用:江苏省苏州市2018-2019学年高一下学期期末数学试题
2 . 以下四个关于圆锥曲线的命题中:
①设
为两个定点,
为非零常数,
,则动点
的轨迹为双曲线;
②过定圆
上一定点
作圆的动弦
,则弦
中点P的轨迹为椭圆;
③方程
的两根可分别作为椭圆和双曲线的离心率;
④双曲线
与椭圆
有相同的焦点.
其中真命题的序号为__________ .(写出所有真命题的序号)
①设
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/050844625d53490eaca84cd88a24bcf1.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/9a8f29a11fe44335ad2fcedbf2e2d8f1.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/761223df1fd84f72a5a5c8d812e3d2e1.png?resizew=104)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/85db808d7db742699aac6ba16653787b.png?resizew=16)
②过定圆
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/1f3d2c2126bf4f2299f22418acff701e.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/710a5b7c41574fe6a8e75c59e0a9d1b6.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/7ac2966eed4f420bbc5bb9e5abd97e81.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/7ac2966eed4f420bbc5bb9e5abd97e81.png?resizew=27)
③方程
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/c58d3114372e49de9d82d53045d59086.png?resizew=107)
④双曲线
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/7edcde3be3024e0e815a1c9463e6e84f.png?resizew=80)
![](https://img.xkw.com/dksih/QBM/2015/12/17/1572368410738688/1572368416661504/STEM/5badc90302224606bed492a05b7eeecb.png?resizew=76)
其中真命题的序号为
您最近一年使用:0次
3 . 在正方体
中,给出以下四个结论:
(1)直线
平面
;(2)直线
与平面
相交;
(3)直线
平面
; (4)平面
平面
.
上述结论中,所有正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd8f61df5729a4a941d7403a047dae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96872cd6cd581ae8a861c7032e0257b4.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263d398159c7433838b714a9a75d61e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d32b0fac933ccb4eaa623a9ea1b2b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
上述结论中,所有正确结论的序号为
![](https://img.xkw.com/dksih/QBM/2019/4/23/2188698964582400/2189492396007424/STEM/6e1d30c125ee40b996e47dca621b1f71.png?resizew=112)
您最近一年使用:0次
2016-12-03更新
|
1796次组卷
|
5卷引用:2015届江苏省滨海中学高三下学期第一次月考数学试卷