解题方法
1 . 设公差为
的等差数列
的前
项和为
,能说明“若
,则数列
是递减数列”为假命题的一组
的值依次为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](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/9c9e0490a0d021ff5eb6bddd42e02307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da2dd8d2a73a50b19abd87bb39f48f1.png)
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名校
解题方法
2 . 定义在
上的函数
,给出下列三个论断:
①
在
上单调递增;
②
;
③
.
以其中的两个论断为条件,余下的一个论断为结论,写出一个正确的命题:__________ ,_________ 推出___________ .(把序号写在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7da221f28de0d5aa1b62e0d41cab7d9.png)
以其中的两个论断为条件,余下的一个论断为结论,写出一个正确的命题:
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2023-11-02更新
|
201次组卷
|
3卷引用:北京市交通大学附属中学2023-2024学年高一上学期期中考试数学试题
北京市交通大学附属中学2023-2024学年高一上学期期中考试数学试题北京市海淀区北京交通大学附属中学2023-2024学年高一上学期期中练习数学试题(已下线)【第二练】3.2.1单调性与最大(小)值
3 . 命题“
”是______ (填“真”或“假”)命题,它的否定是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255ba6e3574b8de7b4f336d1b27a9501.png)
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23-24高一上·江苏·课后作业
4 . 一般地,命题“若
则
”为真,记作“![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
___
”(或“![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
___
”),读作“
推出
”;
“若
则
”为假,记作“![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
___
”(或“![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
___
”),读作“
推不出
”.
![](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)
![](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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
“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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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5 . 下列命题中真命题有______________ .
①
是一元二次方程;
②函数
的图象与x轴有一个交点;
③互相包含的两个集合相等;
④空集是任何集合的真子集.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89315341b71744ebe5ab741dc07388ff.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e212cdbfba6610bc55df2c1a737407.png)
③互相包含的两个集合相等;
④空集是任何集合的真子集.
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6 . 在数学中,我们常常遇到定义,定义是对某些对象标明__ 、指明___ ,或者揭示所研究问题中对象的____ .
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7 . 在数学中,有些已经被证明为真的____ 可以作为推理的依据直接使用,一般称之为定理.
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8 . 在数学中,许多命题可表示为“若
则
”,其中
叫作命题的___ ,
叫作命题的___ .
![](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)
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9 . 在数学中,我们把可判断____ 的陈述句叫做命题.
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名校
解题方法
10 . 若命题“函数
无极值”为真命题,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43bdede1d3fba3c1eb231c45dab577ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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