名校
1 . 下面说法正确的有( )个
①
,
②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dea4bfa6c5cebd0479f7cbfba64c510.png)
,
③命题“若
,则
”的否命题为真命题,
④命题“若
,则
有实根”的逆否命题为真命题.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d44011b51454a70d56d6da756cdea9c.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baea4ea1d1b536bc25df037f3664811a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dea4bfa6c5cebd0479f7cbfba64c510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72a54f70277b05bad8bca2c44b0cb0f.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199e9b71bddd6f73725518ab2d567b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
④命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5707186257494f1fea86066f2778b5.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2 . 下列说法不正确的是( )
A.若![]() ![]() |
B.命题![]() ![]() ![]() ![]() ![]() ![]() |
C.回归直线方程为![]() ![]() |
D.在![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-04-26更新
|
625次组卷
|
2卷引用:四川省遂宁市2023届高三三诊考试数学(理)试题
名校
3 . 关于x方程
的两个根为a,b,且
,则以下结论正确的个数是( ).
(1)
;(2)
;(3)
;(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750c4cd19365ca31f6955297eb157dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca5cb0a10e85ec9ab06fab042f58675.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95eaee89e6b615e5fe624a93706a1141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72586b81b92082eba4a65b8f1910b8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f9cab735b4b3aabf74b491b8b00430.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
名校
解题方法
4 . 给出的下列命题中,正确的命题有( )
A.若![]() ![]() |
B.命题![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2023-02-17更新
|
268次组卷
|
3卷引用:四川省内江市隆昌一中2023-2024学年高一上学期期末模拟数学试题(二)