解题方法
1 . 英国著名物理学家牛顿曾研究过函数
的图象,其形恰如希腊神话中海神波塞冬的武器——三叉戟,因此
的图象又称为牛顿三叉戟曲线.
![](https://img.xkw.com/dksih/QBM/2023/1/30/3164161277140992/3165396944830464/STEM/8a6379f872ad4def83630a9f16099d23.png?resizew=198)
(1)证明:
在
上为减函数;
(2)当
时,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfee2c4efc91317d8e0ade4c839d863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2023/1/30/3164161277140992/3165396944830464/STEM/8a6379f872ad4def83630a9f16099d23.png?resizew=198)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9414348d57c7fc77dcfa8f0744cb0c9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2db972e67f3cfa05cbc69bec992839.png)
您最近一年使用:0次
解题方法
2 . 设
和
是满足以下三个条件的有理数集Q的两个子集:
(1)
和
都不是空集;
(2)
;
(3)若
,
,则
,我们称序对
为一个分割.
下列选项中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df132d5839d617900386ceb2f69c3025.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76af99a6bb7da0da470b4fc10733d014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8fc6afc222ba7bbcc48edc979a35bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b321b66145a2ed6b30d30b62fd8acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d7a2eff9ab8dcfcaaeb7e87596db6b.png)
下列选项中,正确的是( )
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若序对![]() ![]() ![]() |
D.若序对![]() ![]() ![]() |
您最近一年使用:0次
2022-11-09更新
|
185次组卷
|
2卷引用:河南省商丘市夏邑县2022-2023学年高一上学期期中数学试题