1.
![](http://static.xuejinqu.com/qimg/0eb/0eb4fa35c6b05980e0cd5cc8a84a318b.png)
A.chair | B.desk |
![](http://static.xuejinqu.com/qimg/eb3/eb3c9380e1b143239fd05b1de77b7c1c.png)
A.ruler | B.eraser |
![](http://static.xuejinqu.com/qimg/f5f/f5f709b9f0bfcf9de38ab6f91b2adca2.png)
A.boy | B.sister |
![](http://static.xuejinqu.com/qimg/06e/06ef2951bc77d44d6a8e6f4bc1320a4a.png)
A.four | B.five |
![](http://static.xuejinqu.com/qimg/348/348fd444330494cde4fda1a862e37391.png)
A.school | B.classroom |
![](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)