A. take photos B. get up C. buy a present D. write an email E. have a party |
1.
![](http://static.xuejinqu.com/qimg/ddc/ddc05c8fd6305be797ed1fe0a7cea8bd.png)
2.
![](http://static.xuejinqu.com/qimg/493/4934151589fa5b2fb15446b633fd59cf.png)
3.
![](http://static.xuejinqu.com/qimg/4b8/4b80ac0f5e2e75e368a269e3a6f33eea.png)
4.
![](http://static.xuejinqu.com/qimg/b53/b53611ac1d748e439b5ee3e22c9ae2b2.png)
5.
![](http://static.xuejinqu.com/qimg/277/27711b26c923f98d9719aad6f513c708.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)