A. —What color is it? —It’s brown. B. —What color is this? —It’s purple. C. —Is it brown? —No, it’s blue. D. —Is it green? —Yes, it is. |
1.
![](http://static.xuejinqu.com/qimg/a4a/a4a3d35fbcb73b1c538949121df56fdf.png)
2.
![](http://static.xuejinqu.com/qimg/984/984212cbd5560d547b209d21d0a2a984.png)
3.
![](http://static.xuejinqu.com/qimg/eed/eed31732b92dd9067e572539d6ad82d8.png)
4.
![](http://static.xuejinqu.com/qimg/00c/00c305bdfdbcb78b9d26f1cd7046c854.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)