1. China
![](http://static.xuejinqu.com/qimg/854/854cf093ab15d49ebe4b28a804d17ae8.png)
2. the U.K.
![](http://static.xuejinqu.com/qimg/bc4/bc495117f4700be3306a8f64741d443d.png)
3. Australia
![](http://static.xuejinqu.com/qimg/4c0/4c043ce58c50fd6db9f31ccdc7ca9497.png)
4. the U.S.
![](http://static.xuejinqu.com/qimg/e29/e2928aad69e44257b2c55121b8c8505c.png)
5. Canada
![](http://static.xuejinqu.com/qimg/53b/53bc934c9ec98f0eb8f32e0504fc0b0e.png)
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)