A.up | B.down | C.near | D.at |
![](http://static.xuejinqu.com/qimg/fa6/fa6767039e0f14d5d7dbcdf388d1cddf.png)
2. The train
![](http://static.xuejinqu.com/qimg/87a/87ac7e3f6bafdc7e51ab8d59a7373e37.png)
3. The train is
![](http://static.xuejinqu.com/qimg/6d0/6d061d0fc88f84acf680c5537a90ca00.png)
4. The train is
![](http://static.xuejinqu.com/qimg/d29/d29a68e05d1aa6e8de9d36c5822f3a9d.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)