名校
解题方法
1 . 若函数
图象上存在两个点
,
关于原点对称,则对称点
为函数
的“孪生点对”,且点
对
与可看作同一个“孪生点对”.若函数
恰好有两个“孪生点对”,则实数
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41be4f4fbf21555f325caf280c392c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41be4f4fbf21555f325caf280c392c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7113de81db260e6666292f39b447b848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e54fe4b3b533c92b4a87bfe80339d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0 | B.2 | C.4 | D.6 |
您最近一年使用:0次
2018-06-14更新
|
723次组卷
|
8卷引用:【全国市级联考】河南省濮阳市2017-2018学年高二下学期升级考试数学(文)试题
解题方法
2 . 已知函数
,且
在
内有且仅有两个不同的零点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc670fb8a9943d67ce4794b6ae8ae69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81610af483b9eb7e79d77334ed28229b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84d41b94678bd8e3c114f40adb5425c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-14更新
|
648次组卷
|
3卷引用:【市级联考】山东省德州市2018届高考数学(理科)一模试题
3 . 已知
.
(1)若
有两个零点,求
的范围;
(2)若
有两个极值点,求
的范围;
(3)在(2)的条件下,若
的两个极值点为
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfbebe96106abe60a93fa0a23ad3e9d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c369c4bc49337cf1b9f783612bd04c.png)
您最近一年使用:0次
2018-02-17更新
|
1307次组卷
|
2卷引用:【全国校级联考】安徽省示范高中培优联盟2017-2018学年高二下学期春季联赛数学(文)试题