He’s She’s I’m
[[QOrDeR]]
![](http://static.xuejinqu.com/qimg/69b/69b8fb2863d64d74542e5d6fff3ed352.png)
A: What are you doing?
B:
【小题2】
![](http://static.xuejinqu.com/qimg/2e2/2e26ee98f7da9e9847ae904b209b7fe0.png)
A: What’s Becky doing?
B:
【小题3】
![](http://static.xuejinqu.com/qimg/fef/fefcf4e72b517c3ea1fd1e59f85f5f0c.png)
A: What’s Sam doing?
B:
![](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)