名校
1 . 有如下命题:
①“
”是“
”成立的充分不必要条件;
②
,则
;
③
对一切正实数
均成立;
④“
”是“
”成立的必要非充分条件.
其中正确的命题为___________ .(填写正确命题的序号)
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
②
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650637590528/1572650643382272/STEM/801b0442b5224f69a4d387a37f33a152.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf3deba9989a4e13f36816519fcf27d.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a661380bb3fe19bc3c46a4eb16934a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13b34c99b942b8dd2cbd88ed017de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481ee0d1e39e92a4732eea90225eb94c.png)
其中正确的命题为
您最近一年使用:0次
2016-12-04更新
|
1333次组卷
|
5卷引用:2015-2016学年重庆市巴蜀中学高一下期中理科数学试卷
2015-2016学年重庆市巴蜀中学高一下期中理科数学试卷人教A版(2019) 必修第一册 第二章 一元二次函数方程不等式 单元测试黑龙江省大庆铁人中学2020-2021学年高二上学期期中考试数学试题黑龙江省大庆市铁人中学2020-2021学年高二(上)期中数学试题(已下线)第2章 一元二次函数、方程和不等式(单元提升卷)-2022-2023学年高一数学考试满分全攻略(人教A版2019必修第一册)
2 . 选修4—5:不等式选讲
设函数
.
(Ⅰ)画出函数![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/afd20fae69c4417f8d94d88ebc7f209e.png)
的图像;
(Ⅱ)若不等式![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/564986eec6154691995d5232f62caa4d.png)
的解集非空,求
的取值范围.
设函数
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/83b31d8322754fb4bcdc226951ebce6f.png)
(Ⅰ)画出函数
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/afd20fae69c4417f8d94d88ebc7f209e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/564986eec6154691995d5232f62caa4d.png)
(Ⅱ)若不等式
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/564986eec6154691995d5232f62caa4d.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/3e8e56b2bf04424e8975ea9fa371fa48.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572573757202432/1572573763551232/STEM/7a298629e2014b55b1457663834ddb20.png)
您最近一年使用:0次
2010·河南开封·一模
名校
解题方法
3 . 选修4—5:不等式选讲
设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb4d847a64c278b0d6baef1c43b6314.png)
(1)画出函数
的图象;
(2)若不等式
恒成立,求实数
的范围.
设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb4d847a64c278b0d6baef1c43b6314.png)
(1)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477229a5675d3dbae9870485420e062e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2ebbbbef81196acbd0f62be038917f.png)
(1)画出该函数的图像;
![](https://img.xkw.com/dksih/QBM/2016/7/13/1572918411714560/1572918417530880/STEM/66cca470565f417088541cf6ed057fc3.png)
(2)求函数
的单调区间;
(3)设
,求
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2ebbbbef81196acbd0f62be038917f.png)
(1)画出该函数的图像;
![](https://img.xkw.com/dksih/QBM/2016/7/13/1572918411714560/1572918417530880/STEM/66cca470565f417088541cf6ed057fc3.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd072f1751e1c918baeb42475c13d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de19660891d25af49f7a2f64fda5565e.png)
您最近一年使用:0次