名校
1 . 命题“
,
”的否定是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4345285fcf47de72a6a9856b7bd82079.png)
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2020-04-25更新
|
655次组卷
|
8卷引用:天津市河西区2019-2020学年高三上学期期中数学试题
2 . 命题“
,
”的否定是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642b38a56b7f8bdd8ce0bc6f37ee0431.png)
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3 . 命题“
,
”的否定为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75359f0918d9a26dea006b11e254d667.png)
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名校
4 . 命题“
,
”的否定为:________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610cd64aad55489c32309b15b04b1b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816c1e60a8490d4545fc4a50b098a55c.png)
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名校
5 . 命题“
,
”的否定为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f0889777cab6ac15fddbdea80335d2.png)
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名校
6 . 命题
:“
,
”的否定
是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0be2fe483d1fe767473130ee681c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
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2020-04-18更新
|
781次组卷
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7卷引用:山东省潍坊市临朐县2019-2020学年高三10月阶段性模块监测数学试题
7 . 以下结论中,其中正确的结论有______ .(填序号)
①命题“
,
”的否定为“
,
”;
②“
”是“
”的充分不必要条件;
③“若
,则
有实根”的逆否命题为真命题;
④若
是正整数,则
,
都是正整数.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37660096fb35820bc02bb27d58195fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37660096fb35820bc02bb27d58195fc.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df641ab645927ee577e79faf18dcdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf061a36f912669d146fb58e89abce22.png)
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a22392b0dab5dc1225cb4a9d56e22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b915b082c274e4291d8b46f6a8d638f.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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名校
8 . 已知命题
,则
:_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029206bf9a446585b944b2acd837a055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
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解题方法
9 . 下列命题:①若等差数列
的公差d不为0,则给
,对于一切
,都有
;②若等差数列
的公差d<0.且
,则
和
都是
中的最大项;③命题P:
,
,的否定为:
,
;④若函数
,则
.其中真命题的序号为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9532486624cc556c09ab71cbbf546ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668a397301141b4e3fa8109515847004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277d63e2ebf03b22f9f110b436342043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27182444d3da4003680f07ec299087c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48e81b54f78b96294295542b010dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ff5eced4c5c4c8f11396a7eff5da5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f9bf034aa02b5488c815517f13df3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fd0af99f185912bf3ee4c1df1ec1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab6b69a6e4fef726aafeb69c8f00652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc4e3775c850f1c1804f9eb7a70153a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fe56d5ba415e3bacc197c53b454fac.png)
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名校
10 . 命题
,
,
的否定为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fce00602edd3aa01f7f15523da0770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431f2de2786a90fcf41a95fb6be28f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f9bf034aa02b5488c815517f13df3f.png)
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2020-04-12更新
|
368次组卷
|
4卷引用:2020届百师联盟高三开学摸底大联考全国卷数学(文)试题