1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a067e86ae162185a04bdf862b40cd255.png)
的图像过点
,若
对
恒成立,则
的值为__________ ;当
最小时,函数
在区间
的零点个数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a067e86ae162185a04bdf862b40cd255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18439bc0b18a45adccacb67b77cc5c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1bb3229fd3302edbee5fcb83be491d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151d4f637a3f6ad8ded3c9a856e16b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f86c0e39267a513e6a30f2ff73aa927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcb24b768950ac36ae912ae819a4318.png)
您最近一年使用:0次
2 . 如图所示,摩天轮的半径为
米,点
距地面高度为
米,摩天轮做匀速运动,每
分钟转一圈,以点
为原点,过点
且平行与地平线的直线为
轴建立平面直角坐标系
,设点
的起始位置在最低点(且在最低点开始时),设在时刻
(分钟)时点
距地面的高度
(米),则
与
的函数关系式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
__________ .在摩天轮旋转一周内,点
到地面的距离不小于
米的时间长度为 __________ (分钟)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://img.xkw.com/dksih/QBM/2017/8/19/1755663802613760/1757013380980736/STEM/817fed2373364131a42c514b5290d852.png?resizew=142)
您最近一年使用:0次
3 . 设函数
,则函数
的最小正周期为__________ ,单调递增区间为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1a92e2cbf3883004563d268f43b058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
4 .
的角化为角度制的结果为__________ ,
的角化为弧度制的结果为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fba464516cad0a74f4d387a40e3f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ca2b22e39965b2051d7742b575667a.png)
您最近一年使用:0次