已知定义在
上的奇函数
恒有
,当
时,
,已知
,则函数
在
上的零点个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621f1e1a9e75ffbd8e4ada7d261ad662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d31d07e0e178dd81de9ab409d9475e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580ad437b52cccde3dba91bcaac18fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a21e43679392b63a041c1bd21603af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7d82191a1c362ffb4e7cacf20e1c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad38b042b5790c6fac8bc75d9de65ba3.png)
A.4 | B.5 |
C.3或4 | D.4或5 |
更新时间:2023-11-15 00:27:58
|
相似题推荐
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】定义在
上的偶函数
满足:对任意的实数
都有
,且
,
.则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79730831939b50d919a10226c331f94c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b9a961ac7e7aed0aa31509e2e40585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babc434f884ebe24475f78daac507085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4932dd82fd1abf2a1b571a0c9bb296.png)
A.2017 | B.1010 | C.1008 | D.2 |
您最近一年使用:0次
单选题
|
适中
(0.65)
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【推荐2】已知定义在
上奇函数
满足①对任意
,都有
成立;②当
时,
,则
在
上根的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95d021f19fbafcf380478fdef49589e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/268e32aac564373f354812513a379655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f170fd7c4a0409d60901273170cedd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca5ab775787329078e0cb75ac466a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b5fee94815327a0e7fb0f4b543b1f9.png)
A.4 | B.5 | C.6 | D.7 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】设
是函数
的导函数,
的图象如图所示,则
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d31f9ce464f2ce3b24833b70595941c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbbf7284eab0a86f89fcc2cc276ea0c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】用min{a,b,c}表示a、b、c三个数中的最小值.设f(x)=min{2x,x+2,10-x}(x≥0),则f(x)的最大值为 ( )
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】设
是定义在
上的奇函数,且当
时,
.若
,
,
大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b767c33d36acbb9b5110ad0652237652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64adde545b783cc134858d947f8555b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc8fd2eaff14c676d37bd104ec41255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37199bb52ad4223387d0e8fe47df1495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f5d2d835babab23eadf9ca02c6862d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157cb1a451eaaca2ae9cfcefa12e69da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922a3981519bf846bf9b9718a49ddb48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ca7cd3845ad5bd76104d30e802c6a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知函数
,则方程
的解的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335570dce9f4d64a571096c28f9bd78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00db805d57b413448f7d5668ab3d9acd.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
单选题
|
适中
(0.65)
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解题方法
【推荐2】已知函数
,给出下列四个结论:
①若
,则函数
至少有一个零点;
②存在实数
,
,使得函数
无零点;
③若
,则不存在实数
,使得函数
有三个零点;
④对任意实数
,总存在实数
使得函数
有两个零点.
其中所有正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa0e469641d24acb42e59f56652f520.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
④对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
其中所有正确结论的序号是( )
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
您最近一年使用:0次