![](http://static.xuejinqu.com/qimg/a9e/a9ec91440489bfd81f140b670525a095.png)
2. Children’s Day b.
![](http://static.xuejinqu.com/qimg/7a7/7a7249e85bd83ba3a69a3491241fb483.png)
3. drawing pictures c.
![](http://static.xuejinqu.com/qimg/dd6/dd600b4a90ed65d7713a72c0fe7c3223.png)
4. making a snowman d.
![](http://static.xuejinqu.com/qimg/776/776d37d246b6f5c38f7cb6b0866cea96.png)
5. taking a dancing class e.
![](http://static.xuejinqu.com/qimg/74e/74e15b6f581bf1ff4b53670eab811c70.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)