解题方法
1 . 关于函数
有下述四个结论:①
是偶函数;②
在
上是减函数;③
在
上有三个零点;④
的最小值是0.其中所有正确结论编号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3229b7c8fc5a096ea28f715cd3d003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f81841df5843d6058e09161bb9c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955fade76485dacdee5d82108d9c58c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.①②④ | B.②③ | C.①③ | D.①④ |
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2 . 若不等式
对
上恒成立,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf602ba27db2aafae70f09646451a13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84321d37ec168d51bdc810a007845c38.png)
A.![]() | B.![]() | C.![]() | D.2 |
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解题方法
3 . 设点
是单位圆上的一定点,动点
从点
出发在圆周上按逆时针方向旋转一周,点
所旋转过的弧
的长为
,圆心
到弦
的垂线段的长为
,则函数
的图象大致是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14f419e14bc30fe2fada469a0fbbb64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7332e9de138a3990bdbb53dcf189e680.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
4 . 如图是函数
(其中
,
的部分图象,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417992215969792/2420809539772416/STEM/82f51461b6054fdd8238ab442f0020cc.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a067e86ae162185a04bdf862b40cd255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1692016fec1a1e74b84cd384904bd59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122d213f8dbbcac597ebbe49264b90b2.png)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417992215969792/2420809539772416/STEM/82f51461b6054fdd8238ab442f0020cc.png?resizew=201)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
5 . 已知函数
部分图象如图所示,且
,对不同的
,若
,有
,则
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/0121f3f2-4724-43c3-a4cf-aabf7bfd3571.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5954c768f1e410d08b36ee5a016d7124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8761f5c8f22544e0d732a9436a72303c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f20b947d584a1dc48676c2ae6e2af52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3375f15e79473f127e7d51f48d592235.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/0121f3f2-4724-43c3-a4cf-aabf7bfd3571.png?resizew=142)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
6 . 设
为函数
的图象上的一个最高点,
为函数
的图象上的一个最低点,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d4fb29efd4a874150599b88643ee84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d0c9463771d300e9c7a0c038c760bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
A.![]() | B.2 | C.![]() | D.![]() |
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解题方法
7 . 设函数
,若方程
恰好有三个根,分别为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7137aec74c20054fc1397757ade313e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc231c399eaba3ac0c3593ca0a362f1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181bea13d6ce380e80eb22e5475eac5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5b965b3f27889e139013aa8c8f8fe3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-04-07更新
|
899次组卷
|
2卷引用:2017届吉林省延边州高三下学期高考仿真考试数学(文)试卷
解题方法
8 . 已知函数
的部分图象如图所示,则( )
![](https://img.xkw.com/dksih/QBM/2020/12/31/2625610197598208/2628440502722560/STEM/a15b11d5-7b8d-44f7-96ca-c468d51c78df.png?resizew=275)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e5ea3c7ff8037e91569bf7f35c7898.png)
![](https://img.xkw.com/dksih/QBM/2020/12/31/2625610197598208/2628440502722560/STEM/a15b11d5-7b8d-44f7-96ca-c468d51c78df.png?resizew=275)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2021-01-03更新
|
120次组卷
|
2卷引用:河南省2020-2021学年高三上学期质量检测(五)数学(文科)试题
名校
解题方法
9 . 已知函数
,把f(x)的图像先向右平移
个单位,再把每个点的横坐标扩大到原来的2倍(纵坐标不变),可得到的函数g(x)图像,当
时,方程g(x)+k=0有两个不同的实数根,则实数k的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203ca439ab542e3b852e5063d44ce7bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908e3b4e523c042732ccb7c215aac99.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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