名校
1 . 已知a,b,c分别为
的内角A,B,C的对边,命题
若
,则
为钝角三角形,命题
若
,则
.下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272058608afabdb02a59321e1bffe344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e0e2a08194ecf124b5601ca7618782.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知命题p:存在
,使得
;命题q:对任意
,都有
,则下列命题中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76008d6200231ba84999fa84e29dd7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4a8150a57cfbec44fc19d32ebd7c64.png)
A.p且q | B.(![]() | C.p且(![]() | D.![]() |
您最近一年使用:0次
2023-12-11更新
|
47次组卷
|
2卷引用:陕西省西安博爱国际学校2021-2022学年高二上学期期末理科数学试题
3 . 已知,命题p:
,都有
;命题q:
,总有
.则下列命题中是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e907fc38d5ed1a0d06362bc3ba4a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad5963d0b41c2636e45b99381b6d7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313311ea184ce9602a367f90bb3364e6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 已知命题p:
,
;命题q:若
,则
,
.下列命题是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdbddf8c0ba6f4a5b15dc52ba383f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a052a203089c4cf1f1bf27bbc3188be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2ca8b4fb36f7d43e12b2b61590fe13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ce34763c38bb612af3a944528f33cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-10-09更新
|
172次组卷
|
3卷引用:陕西省2024届高三上学期第一次联考理科数学试题
5 . 已知命题
:“若两组数据
和
的平均数相同,方差不同,则将两组数据合并为一组数据后所得到的新数据的方差介于原来两组数据的方差之间”;命题
:“函数
(
且
)在
上单调递增”,则下列命题中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195f9cb9c1ca84756dd98afdc784ead9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cc10907a8f584a7479712f66107476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc630cb18bd821282d7cf4b55734e0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . “
为假”是“
为假”的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
A.充分不必要 | B.必要不充分 |
C.充要 | D.既不充分也不必要 |
您最近一年使用:0次
名校
7 . 已知命题
:函数
是奇函数,命题
:任何实数都是有理数,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b161347f6a2fcfd9bf0acf1e8a03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-09-05更新
|
142次组卷
|
4卷引用:陕西省渭南市华阴市2020-2021学年高二上学期期末理科数学试题
名校
8 . 若命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
,
;命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
,
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e81b4aac721bcd4a49593b48a28a8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e159d8e6afaa2e32b5e3094aad1529ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491f9709f00a1bc169278fbe01f576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e178eecb67c6e23101d62557197e5227.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-09-01更新
|
362次组卷
|
2卷引用:陕西省渭南市富平县2020-2021学年高二上学期期末文科数学试题
名校
9 . 已知命题
:若
,则
;命题
:
,
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04959523a28786962d51cfb43a8767d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad5963d0b41c2636e45b99381b6d7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01aebd0d6356bdbbe6db1d07c5ceb8a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-21更新
|
313次组卷
|
2卷引用:陕西省延安市子长市中学2020-2021学年高二上学期期末理科数学试题
10 . 已知命题
:若空间向量
与
平行,则
;命题
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2cc1f1ef9ad32eef62aefa4c3fc3d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25180750a346c767736480c657b2a53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次