2016高二·全国·课后作业
1 . 已知命题
,
,命题
,使得
.若“
或
为真”,“
且
为假”,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/442413b7821141b19d1ecc0ed9ecb7f2.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/e8934024c62444eca6d4b603df441dcb.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/c42b3ad7dbde462ba0eb7d58e435321d.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/5ba0a6870ce243879f32879b56bd63bd.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/b5743c6939af401da0e7a8cbb13480db.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/e63568e67c624beea80a0b2896df168d.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/b5743c6939af401da0e7a8cbb13480db.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/e63568e67c624beea80a0b2896df168d.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954275328/STEM/3e9519cf810f432fafde9082e0b6b1a9.png)
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2016高二·全国·课后作业
2 . 下列命题:
①
;②
;③
;④
;
⑤
;⑥
.
其中所有真命题的序号是__________ .
①
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/168953f0bf684a5e87756f179bb55037.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/c91e86fd8e6e4a7ea5b68f4b4ccba874.png?resizew=92)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/16ecf38d955a4e78a488badd9af2291e.png?resizew=88)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/915afceb6dc3419daf04eb17be2d52bf.png?resizew=92)
⑤
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/65efc04e18d049ac9dfd1dfccec89cac.png?resizew=147)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954324480/STEM/48c1fc5574644050ad3818f1fbd87a90.png?resizew=112)
其中所有真命题的序号是
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2016高二·全国·课后作业
3 . 下列命题中是全称命题的是
A.圆有内接四边形 |
B.![]() |
C.存在![]() ![]() |
D.若三角形的三边长分别为![]() ![]() ![]() |
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