解题方法
1 . 判断正误(正确的写正确,错误的写错误)
(1)
时,函数
取得最大值为
.( )
(2)函数
关于
对称,则
.( )
(3)
,则
为锐角.( )
(4)函数
的值域是
.( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60eeccd121aa2d2bfe10b29a058e4866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c793183ec51b2304e5f3eb0e422a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0bedc0b60d6b4ec18ff582bbbb1e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60eeccd121aa2d2bfe10b29a058e4866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d6401d284eac57ec45e9833713e382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(4)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720a213c84fe098182f268548c73845f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
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