已知p:2+2=5;q:3>2,则下列判断错误的是( )
A.“p∨q”为真,“¬q”为假 | B.“p∧q”为假,“¬p”为真 |
C.“p∧q”为假,“¬p”为假 | D.“p∨q”为真,“¬p”为真 |
更新时间:2020-03-21 21:20:07
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【知识点】 根据或且非命题的真假判断命题的真假解读
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【推荐1】下列命题中正确命题的个数是
①命题“函数
的最小值不为
”是假命题;
②“
”是“
”的必要不充分条件;③若
为假命题,则
,
均为假命题;
④若命题
:
,
,则
:
,
;
①命题“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdba11c38bf8009dd9d0a4f36341827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a64103561364ac4c9460a72c9e154bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb0455a4ef257340e2b0c9cd8a7df1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094543346d88c4ed45c1b1fb91f5265b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa5de275b31725012fde6538a03a76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d2b0057e9f8467a413b24c4610dc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fd5acd3cea0866f64bc80ab4c14e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704c21b1058b499455ac2060b9e33027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380b00e1533db2f67c6114c750e54269.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】下列说法正确的个数为( )
①对于不重合的两条直线,“两条直线的斜率相等”是“两条直线平行”的必要不充分条件;
②命题“
”的否定是“
”;
③“
且
为真”是“
或
为真”的充分不必要条件;
④已知直线
和平面
,若
,则
.
①对于不重合的两条直线,“两条直线的斜率相等”是“两条直线平行”的必要不充分条件;
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03687c07d224b7970446e35774850d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f745bfd9b62d5a0002bb4c942452e00.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72053aeec70d6d9a9d409e33bade348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
A.1 | B.2 | C.3 | D.4 |
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