(______) 1. Canada A.
![](http://static.xuejinqu.com/qimg/3fb/3fba5278b95e41dee608664c2e8441bb.png)
![](http://static.xuejinqu.com/qimg/7a2/7a28b1065251a4fe7058553e9c46e9e4.png)
(_______) 2. teacher A .
![](http://static.xuejinqu.com/qimg/ffb/ffb413927cfe2f84a2c42b7e732b714f.png)
![](http://static.xuejinqu.com/qimg/58a/58a6df7039e8007a14a6f8e41ab01216.png)
(______) 3. girl A.
![](http://static.xuejinqu.com/qimg/773/7733a4308e0f916d1419b26768f9b847.png)
![](http://static.xuejinqu.com/qimg/df5/df541667dad778c4cac256e464cafad5.png)
(_____) 4. USA A.
![](http://static.xuejinqu.com/qimg/6fb/6fb64d960940088d4f9f569d46eb14ca.png)
![](http://static.xuejinqu.com/qimg/e7d/e7d9c058deb4eb4f3dc6a4a578963aa9.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)