(1).I have
![](http://static.xuejinqu.com/qimg/c4b/c4b9b1c380d8e879f7879c9d1a4a14a0.png)
(2).What colour
![](http://static.xuejinqu.com/qimg/186/1869a8a179edf3f16f2c3641f27069ee.png)
(3).My bag is purple
![](http://static.xuejinqu.com/qimg/7b0/7b06f46db954f6f25557d1f87bd31b97.png)
(4).Can you help
![](http://static.xuejinqu.com/qimg/63a/63a31a1a8dba489724f600418804e9a6.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)