定义在
上的偶函数
,当
时,
则=
的所有零点之和为
![](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/b767c33d36acbb9b5110ad0652237652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916d2aa8bfd414a27cf2075a2dd7c209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3eef9f9973d6f40b23597e3ac2d36a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-10-12 16:36:23
|
相似题推荐
单选题
|
较难
(0.4)
名校
【推荐1】已知函数
,把函数
的偶数零点按从小到大的顺序排成一个数列,该数列的前10项的和
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f44afd3b4c19e914af01de54d62ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5e784b0bee207152c5220611010480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
A.45 | B.55 | C.90 | D.110 |
您最近一年使用:0次
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|
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解题方法
【推荐2】已知三个函数
的零点依次为
,则
,
,
的大小关系是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a44f1034080b647cf0f004e3b74ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.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)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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较难
(0.4)
名校
解题方法
【推荐3】已知函数
是定义在R上的奇函数,当
时,
,给出下列命题:
①函数
有2个零点;
②
的解集为
;
③
,
,都有
;
④当
时,
,则
.
其中真命题的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28249e68539b105262b09af8fde63bcf.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb7d939b1b020c13807f46b05147019.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01b783b94032c6075b6216f4b004422.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c163bde914f918f154b9d3a9385ca263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed5f5e74c8ba184becdbb7b5f079748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7906edd3790c767f3a2c0b5895296088.png)
其中真命题的个数是( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
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名校
【推荐1】已知定义在R上的奇函数
,对于
都有
,当
时,
,则函数
在
内所有的零点之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545931b962cf570712d04888b57093f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8b527865aefa9186462f2ad4a72617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d931916c7cf75824d3faf998cb5fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3b9d4e2c69fde9d77434b8b98e7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18bc3c27f77985417a0f24ea398d1f8b.png)
A.16 | B.12 | C.10 | D.8 |
您最近一年使用:0次
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【推荐2】已知
的定义域是
,
,且
.当
时,
,则函数
在区间
上的所有零点之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b65ec32d4da8edb7a7c515168c55414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09b19d9021fa4ade3da27f174937213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3993391fe16e7315c4d92af28c03fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076dbe919ea321831be984f21b41d0eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efb9d34461fb2b32f27e8b7b023a511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd1557b56b670d255b12b3334575c63.png)
A.2 | B.4 | C.6 | D.8 |
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【推荐3】设函数
,若关于x的方程
有四个实根
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de7282f27c83e3cdee097ad11bbe365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976d18a5396ba232f0aa38d136f1d749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d2b6f27f15d72aa4075b17a7e235c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53528438c102ba09a2d635a49405cf5e.png)
A.![]() | B.![]() | C.10 | D.9 |
您最近一年使用:0次