A. tennis B. ping-pong C. badminton D. sport
1.
![](http://static.xuejinqu.com/qimg/6e2/6e269c1612caacbe9f9bcbe011290774.png)
2.
![](http://static.xuejinqu.com/qimg/f90/f90b854bac446da7f54a3cd3df5927b1.png)
3.
![](http://static.xuejinqu.com/qimg/94c/94cab08531de5a54db78c29ed2bdd5d0.png)
4.
![](http://static.xuejinqu.com/qimg/1fc/1fc3de7720d94931ecfd12ee3f2df586.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)