解题方法
1 . 函数
在
的最大值为m,在
的最大值为n,则以下命题为假命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983fa8d30993077d136d644a4de7a394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca44b51af56d89266c3aba528d8a8d0.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
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2 . 若命题:“
,
,使得
”为假命题,则
,
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4dae29e973d29f91d7bbf60a1a98cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec8e77b37f6e127f1e63555d9df834d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:江苏省海安高级中学、宿迁中学2023-2024学年高三下学期模拟考试数学试卷
3 . 命题“
是第一象限角”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fd09fd5c6635ab30c3dc41de1a81a1.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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4 . 存在量词命题:有的三角形的垂心在其外部;命题的否定是( )
A.有的三角形的垂心在其内部. | B.任意三角形的垂心在其内部. |
C.有的三角形的垂心在其内部或边上. | D.任意三角形的垂心在其内部或边上. |
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5 . 下列命题中错误 的命题是( )
A.设等比数列![]() ![]() ![]() ![]() ![]() |
B.对于命题![]() ![]() ![]() ![]() |
C.设函数![]() ![]() |
D.若随机变量![]() ![]() |
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6 . 下列命题正确的个数为( )
①长方体
中,
,
,则异面直线
与
所成角的余弦值为
;
②对于命题:
,
,则命题
的否定:
,
;
③ “
”是“
”的充分不必要条件;
④已知
,
,
,且
,则
的值为
.
①长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
②对于命题:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491f9709f00a1bc169278fbe01f576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd0737f120bf1bae03b9abbae79e4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654120ab17a29dbae5cf9c43860846ca.png)
③ “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8adaa3d42ccb9d59e0d6b6f60bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5553e7018e6e14755bbcda2b657c7b03.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b566395b41fc587143d533f9756024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fc7939259f787ce6d557e59bb3dc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b1ba2e2dbab8c7bec0dad6b63fcc5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1e517c0d481c5d62707ed3f6435d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
A.0 | B.1 | C.2 | D.3 |
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7 . 下列5个命题:①“
,
”的否定;②
是
的必要条件;③“若
,
都是偶数,则
是偶数”的逆命题;④“若
,则
”的否命题;⑤
是无理数
,
是无理数.其中假命题的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2939abf9f1755ea304eeb1e73063cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838caf5f47c6c4a12de52ee4420264d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301c3d4cbe02776b719e0f0406db38c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa3205b1df826d63914dcb55bb3ab43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f194d0be8e14c0dfa0f0e33dc159673c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
A.1 | B.2 | C.3 | D.以上答案都不对 |
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解题方法
8 . 有下列四个命题,其中是假命题的是( )
A.已知![]() |
B.“全等三角形的面积相等”的否命题 |
C.在![]() ![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
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9 . 下列命题正确的是( )
A.“![]() ![]() |
B.若“![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.![]() ![]() |
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10 . 给出下列四个命题:①“若
,则a>b”的逆命题;②“
,使得
”的否定;③已知函数
的图象向右平移
个单位长度后得到函数
的图象,“函数
为偶函数”的充要条件是“
”;④在
中,“
”是“
”的充分不必要条件.其中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2939abf9f1755ea304eeb1e73063cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cb4f9a54a37fa2cf503bc77eb67ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460e4a1178391ab692aa0af66b915b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e9f49332bd7f58d3efb1035109e520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbb60c8c689819d191bb1aebd622b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9146192606b1abda29b88e60542e70e.png)
A.②④ | B.①④ | C.③④ | D.②③ |
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