1.Carry your bag.
![](http://static.xuejinqu.com/qimg/091/091c022401e404b63d7e2b3709359ccb.png)
2.Show me a pencil box.
![](http://static.xuejinqu.com/qimg/516/516cc52512fb468a105bc4e88bbadce4.png)
3.Goodbye!
![](http://static.xuejinqu.com/qimg/65c/65c325ff783bd3e73ba5e85b8a29826d.png)
4.Close your book.
![](http://static.xuejinqu.com/qimg/b97/b9759e63afa79bd82486c4f974200299.png)
5.I have a book.
![](http://static.xuejinqu.com/qimg/c0a/c0ade3505f532f4a81c8cd7f880187b1.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)