1 . 已知函数
的图像经过点
.
(1)求实数
的值,并求
的单调递减区间;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4ddf111498971b2ffc711c7a266b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e400cf4a97582c8d1e2dc10ed1a46c.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db64b3a1fb036b1e15ecc1420f008013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2 . 若函数
的最大值为2,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
__________ ,
的一个对称中心为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b9b1899462c28ce25a36d98c4d1324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
3 . 已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123639898112/1572123645313024/STEM/831d2a2715b84cbca8ff372ded17496e.png?resizew=264)
(1)求函数
的解析式;
(2)求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06731553436fc93518cc6529cbecdf.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123639898112/1572123645313024/STEM/831d2a2715b84cbca8ff372ded17496e.png?resizew=264)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b17d7eef8b12c8cc169f5f237c1fda9.png)
您最近一年使用:0次