1. ---What’s this?
![](https://img./dksih/QBM/2019/7/6/2241000680235008/2242521434136576/STEM/a270b0487f464534931e928c5e59bc80.png?resizew=151)
---It’s a
2. --- Is this a skirt?
![](https://img./dksih/QBM/2019/7/6/2241000680235008/2242521434136576/STEM/a5f87ed0d17e426a93656a4f1fde260d.png?resizew=151)
---
3. ---Are these shorts?
![](https://img./dksih/QBM/2019/7/6/2241000680235008/2242521434136576/STEM/f1fe9cbd22144753857767d95bae2ef8.png?resizew=151)
---
![](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)