1 . 给出下列命题:
①“若
,则
”的逆命题为“若
,则
”;
②“
,
”的否定是“
,
”;
③命题“若
,则
”的否命题为“若
,则
”;
④“若
,则a,b全为0”的逆否命题是“若a,b全不为0,则
”.
其中正确的命题序号是( )
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef019ee5c3eff526b479ba9482e8a16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef019ee5c3eff526b479ba9482e8a16b.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f139b44eadf675a59e0f4e880b82b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045748e3e58bfc29cf00ea0b80d2d56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f19a99bb30f18352b45a93ffa8533c1.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfa8bf45e6d2d25a730a793d0cf5694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb20e291772c2614ad19f4cc919dfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a68dbd91d6de68b550a5745ecd461d9.png)
其中正确的命题序号是( )
A.①② | B.①③ | C.②④ | D.③④ |
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2 . 已知命题
:关于
的方程
有实根;命题
:关于
的函数
在
上是增函数,若
是真命题,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c714411bfd70c6e1629da44953c590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a822bf2cb61956e4368c7242bb9923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775e99f9d94defb7d7ecf41c78f28821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知命题
:幂函数
在
上单调递减;命题
:
,都有
.若
为真命题,
为假,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20599099b62eea662d76aa14c23e2893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d41d1cd3e974ea1cce87715f015947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96bd1f2b66c788a1dfdc498f0a22f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5卷引用:江西省赣州市赣县第三中学2023届高三上学期10月月考数学(理)试题
江西省赣州市赣县第三中学2023届高三上学期10月月考数学(理)试题云南省师范大学附属中学2022届高三下学期高考适应性月考卷(十)数学(文)试题云南省师范大学附属中学2022届高三下学期高考适应性月考卷(十)数学(理)试题(已下线)云南师范大学附属中学2022届高三高考适应性月考卷(十一)数学(理)试题(已下线)易错点02 常用逻辑用语
解题方法
4 . 下列说法:①命题“
,若
,则
”是真命题:②以模型
去拟合一组数据时,为了求出回归方程,设
﹐将其变换后得到线性方程
,则c,k的值分别是
和0.3:③已知
是双曲线
的一个焦点,则点F到双曲线E的渐近线的距离等于b.正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f067a2409f73a953e08b09700eeb8276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad3ff5f4d656390df3c9558f8cdc82e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d28162b2a8309f0f7f193e733be414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fd3f8b232a05d4ba000c4d10ae1271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414925ff8c46c7ceba920d034e02466f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c4088276acdbede4781b2ebc466366.png)
A.0 | B.1 | C.2 | D.3 |
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名校
5 . 已知
:方程
表示焦点在
轴上的椭圆,
:方程
表示焦点在
轴上的双曲线,其中
.
(1)若“
”为真命题,求
的取值范围:
(2)若“
”为假命题,“
”为真命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc5494f7d24f95a721555b85c84e8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508296c3979db1536c42e52b48b40bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6659e3aec36b969f21633c5efe3ac46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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6 . 已知命题:“
,方程
有解”是真命题,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38f70af61ec6dc4e4076a4546d44137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6a06ebea5fdfbaec92c4c1347d2e1a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
7 . 给出下列说法:
①命题“若
,则
”的逆否命题是真命题;
②“若函数
的导函数存在,且
是
的极值点,则
”是真命题;
③命题“若
,则
”的否命题是“若
,则
”;
④若
,则
.
其中正确的个数为( )
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3898b62d3fbcb61afb6bc1e9b910f564.png)
②“若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055562d6b8e8114adca3206f3bb5f253.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2128a00f52af4427721f0ebba591daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0cf85180aec35f24e4640192ec583aa.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5765f1e31d50c4129d7296c538e0b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66f6ab068b26288e5af4528de0d5ca7.png)
其中正确的个数为( )
A.1 | B.2 | C.3 | D.4 |
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8 . 命题“若
,
都是奇数,则
是偶数”的逆否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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9 . 下列说法正确的是( ).
A.命题![]() ![]() ![]() ![]() ![]() ![]() |
B.命题“若![]() ![]() ![]() ![]() ![]() ![]() |
C.命题“若![]() ![]() |
D.“![]() ![]() |
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10 . 设
,
:实数
满足
.
(1)若
,且
都为真命题,求x的取值范围;
(2)若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cec15f600b7dcb65e4bfc21fd7a37b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a422f64706146fbaf8661fa44420fe8a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(2)若
![](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/0a6936d370d6a238a608ca56f87198de.png)
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