1 . 设
:关于
的方程
有解;
:函数
在区间
上恒为正值,则
是
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6006b813b77cb709887ce17d7b5314c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f4aee7035176fc6a66d779701f30b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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名校
2 . 设函数
,若互不相等的实数
,
,
,
满足
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc29a35831ff30fbd7197fe6a133a529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a77c42634098327dd27ba3903c2bbcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1249d9de408625c743cc156121e858a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-03-24更新
|
1648次组卷
|
10卷引用:山西省榆社中学2018届高三诊断性模拟考试数学(文)试卷
山西省榆社中学2018届高三诊断性模拟考试数学(文)试卷广东省2018届高三第一次模拟考试数学(理)试题【全国百强校】广东省阳春市第一中学2018届高三第九次月考数学(文)试题【全国市级联考】河北省邢台市2017-2018学年高二下学期第三次月考数学(文)试题【全国百强校】吉林省长春市一五0中学2017-2018学年下学期高二数学(文)试题【全国百强校】重庆四川外语学院重庆第二外国语学校2018-2019学年高一上学期第一次月考数学试题浙江省温州市苍南县树人中学2019-2020学年高一上学期期中数学试题云南省大理市下关第一中学2019-2020学年高二上学期期末考试数学试题福建省莆田市仙游第一中学2018-2019学年高三上学期月考数学(理)试题福建省莆田第二中学2019-2020学年高一上学期期末数学试题
3 . 已知函数
满足
,当
时,
,设
,若方程
在
上有且仅有3个实数解,则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7478369f8a8af668f9f7acebd4e7cc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a903745cd2cb536443d07579b606ece5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6b28c29a9e823cf1d6c764323d7e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c8f0fef6492d4037130097569166eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20082e474b757273b4b83b13f16ddb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-01-11更新
|
817次组卷
|
4卷引用:山西省45校2018届高三第一次联考理数试卷
山西省45校2018届高三第一次联考理数试卷山西省河津三中2018届高三一轮复习阶段性测评理数试卷黑龙江省齐齐哈尔市实验中学2018届高三上学期期中考试数学(理)试题(已下线)专题08 导数及其应用(练习)-1
4 . 已知
,若函数
恰有三个零点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcba85d2019019ee749776b2bec89b19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26846e736b5bac1ff4e5e877c722860e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 设
表示不超过
的最大整数,如
,
,则方程
的解集为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe433ad9925f6f9e4e1bdbe45969cd41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5971b06a0758bb830c4e09a25bb665a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d3ca1ba9045f511f3430680970a5b3.png)
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2017-10-10更新
|
242次组卷
|
2卷引用:山西省45校2018届高三第一次联考文数试卷
名校
6 . 已知函数
(
为自然对数的底数),
.若存在实数
,
,使得
,且
,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265875dc6a4fc029f87d6892cc68b4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2122f51dba3b20af22ee135e401c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23b2604e5f8be78fbe6cafcb9b7f2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac944968625853364eb2c655fcb78ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 若
是定义在
上的函数,且满足:①
是偶函数;②
是偶函数;③当
时,
,当
时,
,则方程
在区间
内的所有实数根之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0328dbb8131d8b24b5f767d1e0a2a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad05719025457903d1b5d5c7b99f97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3457f20aa135299cd85a96c384dababe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502c4ff1cd420b9da4de849e63c307e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cfe91bce00e2757c8f5453ecdc1079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dc9dcc7f86af901246919a0d217a1d.png)
A.0 | B.10 | C.12 | D.24 |
您最近一年使用:0次
2017-05-29更新
|
521次组卷
|
2卷引用:西省实验中学2017届高三下学期模拟热身数学(理)试题
名校
8 . 设函数
,其中
,若只存在两个整数
,使得
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018fb5e485282d4828fac94a660617c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e520c1ab44faaa476a5f3f6181db0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-05-04更新
|
557次组卷
|
2卷引用:山西省临汾市2017届高三考前适应性训练考试(三)数学(文)试题
9 . 已知函数
有两个极值点,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d95d0f39db0668ff37ce8903359818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知函数
,
,
为自然对数的底数,关于
的方程
有四个相异实根,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfb32405d71542f1c87dd58d9d5c4a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd52f4d9905cabc3e1757df60ecbe3e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-03-03更新
|
668次组卷
|
5卷引用:2017届山西省运城市高三4月模拟调研测试数学(理)试卷