![](http://static.xuejinqu.com/qimg/6ae/6aef2d83dbd3128799856c8ea9c51e82.png)
1.A: Where's the train?
B: It's
![](http://static.xuejinqu.com/qimg/cb1/cb1d52aff306d65e933444d3d862efac.png)
2.A: Excuse me. Where's the
![](http://static.xuejinqu.com/qimg/ab0/ab02a6fb8994ab1b6a624ecf2cf0f93b.png)
B: Go
![](http://static.xuejinqu.com/qimg/a82/a8286b6e93bcdc1a32ae1bc2a95f5b3b.png)
![](http://static.xuejinqu.com/qimg/4c4/4c41c6a46a643e732e4fae4a8f52c1a0.png)
3.A: Where's the
![](http://static.xuejinqu.com/qimg/450/450df92e7d22adc53556bb92a4eb8aab.png)
B: Turn
![](http://static.xuejinqu.com/qimg/454/454c78b45cf14b943438a1d634a6bfe5.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)