1 . 已知定义在R上的函数f(x)满足:
且f(x+2)=f(x),
,则方程f(x)=g(x)在区间[3,7]上的所有实根之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de5ce511066c5e4ec426fa13f76e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f769fa0b75f21978f6587d7729a957fd.png)
A.14 | B.12 | C.11 | D.7 |
您最近一年使用:0次
2008高三·福建·竞赛
2 . 已知函数
满足对所有的实数
,都有
.则
的值为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cd41749bcf052946b07cf260bf5546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef42da484f79cfaa474a289343cc8b6.png)
A.![]() | B.![]() | C.0 | D.25 |
您最近一年使用:0次
2008高三·福建·竞赛
3 . 在直角坐标平面
中有点
.对于某个正实数
,存在函数
(
),使得
.其中,
.则
的取值范围为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e358239cdfa5078bcecf62bb1739577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19235af93513ae52117810409db6b8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d3dfd8f276b64af6238500bcfa6dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0cfb438bc09af06cd22b4355081e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2008高三·福建·竞赛
4 . 已知实数
使得只有一个实数
满足关于
的不等式
.则满足条件的所有的实数
的个数是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95b4af777bf4d4626c41862c6b38f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.1 | B.2 | C.3 | D.无穷多 |
您最近一年使用:0次
2008高三·福建·竞赛
5 . 方程
的实数解的个数是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d239cf653c169a371a74284a6e5c5ce.png)
A.0 | B.1 | C.2 | D.4 |
您最近一年使用:0次
2004高三·福建·竞赛
6 . 两个周期函数
的最小周期分
,且
.如果函数
的最小正周期为
,那么,下列5中情形:①
,②
,③
,④
,⑤
中,不可能出现的情况的种数是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724cf149ccc974596673c8aaae9558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542a9426a4bb4e4d2a1b73570d35c365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58f1861611b470a4452ef5904bffb0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4513885faf07956c54b748b696ef08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f486d40990b02693479a2166e64358b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708fc59501f96dd871b0cfe353c7af11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b5c9352173039f511b4fc6f6b606c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb21512f8e4e521e74118fb9c572452.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次