1 . “
”是“
”的
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572415717089280/1572415722807296/STEM/40ff7b2085e34a929f6d6e47dce5fdbf.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572415717089280/1572415722807296/STEM/c6153cbc79bc49ca88ceabf1232bc4cb.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
11-12高三下·黑龙江大庆·期中
解题方法
2 . 在△ABC中,
是角A、B、C成等差数列的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b4392b4d79e2734a121b6a433dc134.png)
A.充分非必要条件 | B.充要条件 |
C.必要非充分条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
解题方法
3 . 定义在
上的函数
满足
,
,则对任意的
, 都有
是
的
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572324391542784/1572324397203456/STEM/f2d12909ba504c9c8a762eea81ffeb03.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572324391542784/1572324397203456/STEM/84c7305483cb4964b3b2ff09f58116e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d823d42411c4545aafc95ccd018fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74ee63cd2babac64a8d4bd088912235.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572324391542784/1572324397203456/STEM/1d1517a16e8d4c3e834573a3d271a462.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572324391542784/1572324397203456/STEM/127ddc0c57d04a76b4c028195bcf57fc.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572324391542784/1572324397203456/STEM/9f354581d80f4c92913081d0591f39f4.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
14-15高三上·山东潍坊·期中
解题方法
4 . 若定义在
上的函数
满足
,且
,则对于任意的
,都有
是
的
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/712f775d63974be69736402e03180873.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/451c8ece6cdb4be699cabb77d1d0006d.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/adedda1774b84ec3b7ab7adc350c6cae.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/46db2414f81145569ba330246c3452ba.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/222bd449ea0244a5a939c720cebffcf8.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/41a7be5ba6ef48d3be6c9602f84ddc07.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571886917115904/1571886922358784/STEM/5da902c9b9a34374bef9c54833a279bc.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次