ate the cake, sang the birthday song, played games, made a wish, had a birthday party |
1.I
![](http://static.xuejinqu.com/qimg/696/6963dd9563b017d383325f0513b79f2e.png)
2.We
![](http://static.xuejinqu.com/qimg/d4c/d4c65dff13c87ab2385781ad48f8cb7c.png)
3.They
![](http://static.xuejinqu.com/qimg/1a2/1a2272b626e80ca14134a3d45220b05a.png)
4.We
![](http://static.xuejinqu.com/qimg/3fc/3fc04d8fc26d7d938e78568a934d7201.png)
5.They
![](http://static.xuejinqu.com/qimg/60a/60a11b1d26122da8d34f7fcd0e176dfc.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)