2020高三上·全国·专题练习
1 . 下列说法中,正确说法的序号为___________ .(写出所有正确说法的序号)
①正切函数
的图象关于点
对称;
②若
,则
成等比数列;
③函数
和函数
具有相同的单调区间;
④若函数
的图象恒在x轴上方,则
的取值范围是
.
①正切函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef183993d9ca7294a680d8797ce79647.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8379fe535e68721fd84be969d257f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecf783b0385c573f96e497f7399d038.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d534d9ff88292d2801ef0b0da5deb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c653ed9cff365dfe6648dfd195be416.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4fbc9e47ae6b6abea9d0ffafeaab9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23cd4b3d8c4419209e8560e60fb322c.png)
您最近一年使用:0次
2020高三上·全国·专题练习
解题方法
2 . 下列说法中,正确说法的序号为___________ .(写出所有正确说法的序号)
①正切函数
的图象关于点
对称;
②若
,则
成等比数列;
③函数
和函数
具有相同的单调区间;
④若函数
在
上为增函数,则
的取值范围是
.
①正切函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef183993d9ca7294a680d8797ce79647.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8379fe535e68721fd84be969d257f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecf783b0385c573f96e497f7399d038.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d534d9ff88292d2801ef0b0da5deb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c653ed9cff365dfe6648dfd195be416.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4fbc9e47ae6b6abea9d0ffafeaab9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
您最近一年使用:0次