名校
1 . 下列四个命题中,
①集合
,且
,则实数
的取值集合是
;
②使得不等式
成立的一个充分条件是
;
③已知
,则
的取值范围是
;
④若
,则
的最小值是8;
⑤若
,则
的取值范围是
;
其中真命题的序号是__________ .
①集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bd9a3d1537cb3ad4a6f538334f79ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebd7c565ca0e0f8b73fedda791479c5.png)
②使得不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9628a52a2d66782e5ea1a5dadf28444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbceb0d573d213b8f8ae91cf0b57d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20c6ab2d0f475b20bb945c1692b6c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342338eded5a03c00eb02ef7f7cf836e.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d0bd65eb59d0acde6f5955490696c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2bd515c3c7f10f253d03d494fbb392a.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2603458b29d71ebfb1b0432f991836ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d89f74ade1b380747d247f0eed0da0.png)
其中真命题的序号是
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2023-10-08更新
|
295次组卷
|
5卷引用:宁夏银川市唐徕中学2023-2024学年高一上学期9月月考数学试题
21-22高一下·天津南开·期末
2 . 有下列四个命题:①函数f(x)=
为偶函数;②函数y=
的值域为|y|y≥0|;③已知集合A={-1,3},B={x|ax-1=0,a∈R},若A∪B=A,则实数a的取值集合为
;④函数y=ax(a>0,且a≠1)与函数y=logaax(a>0,且a≠1)的定义域相同.其中正确命题的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ed0d7b3322f50119bdc8f2b654655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67156a68e3937a0114be1b502e0ab5ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d3b7b4642bbff9de52574b5759d95b.png)
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名校
3 . 下列结论中,请写出正确的结论序号是_______ .
①不等式
解集为实数集![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
②若
,
,
,则
的最小值为1
③已知
,
,
,则
值为1或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
④函数
的定义域为
,则实数
的取值范围为
①不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a4174fe7e27507e533948d8be83d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d272622f97191e9e586a55b0b982dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2436951e9a6f5ca0fc0ae65b9d787119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa18b0f54bf6b0d11ee242338a3da083.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964e461b0fcf322a40fc4479e0018af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68925852051a2fb849f1422fb6c7586d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa8476c6e1c0b45f78fda8f3a8e062e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa311daf7a73f8c45de4462f9d92b6.png)
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