[[QOrDeR]]A.Is Daming doing his homework? B:
![](http://static.xuejinqu.com/qimg/538/538b52ee5404c7923288f87519331af6.png)
【小题2】A:Is Sam drawing a picture? B:
![](http://static.xuejinqu.com/qimg/8a6/8a6f2665a07aa65066a751764c2d5342.png)
【小题3】A:Is Amy watching tv? B:
![](http://static.xuejinqu.com/qimg/92f/92f191a7ee20b2b33338108440386865.png)
【小题4】A:Is Ms Smart reading a letter? B:
![](http://static.xuejinqu.com/qimg/b62/b62805d07d944192b7017de85b7c1d84.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)