名校
1 . 下列说法正确的是( )
(1)已知函数
在区间
上的图象是连续不断的,则命题“若
,则
在区间
内至少有一个零点”的逆命题是假命题
(2)“
”是“直线
和直线
互相垂直”的充要条件:
(3)命题“已知A,B为一个三角形的两内角,若
,
”的否命题为真命题
(4)命题“若
,则
”的逆否命题是真命题.
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4a9ab39641a5109021f98e44a687a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca529f4c3c93db2bb1728466d616c5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aca3272c91ba9773f1c8342cdfdc432.png)
(3)命题“已知A,B为一个三角形的两内角,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19acddff4cb3831a8e8974e532c05242.png)
(4)命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5426b6d35bef718963baa87e24131c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fca5062d79546253d025cf3cd59839.png)
A.(1) | B.(2)(3) | C.(1)(3) | D.(1)(4) |
您最近一年使用:0次
2021-01-24更新
|
990次组卷
|
3卷引用:西藏拉萨中学2022-2023学年高二上学期期末考试数学试题
名校
2 . 已知
,则“
,
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a5cba44014b83519e76eeef75afe36.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2020-01-29更新
|
262次组卷
|
3卷引用:西藏日喀则市2020-2021学年高二上学期期末数学(文)试题