A.I am a cat. |
B.I am a dog. |
C.That is a desk. |
D.This is a window. |
![](http://static.xuejinqu.com/qimg/f8a/f8a6d6a0fcd4cd2c5750cbe710855713.png)
2.
![](http://static.xuejinqu.com/qimg/9c9/9c99ada0d9c731b9263a7dc80405a455.png)
3.
![](http://static.xuejinqu.com/qimg/403/4039f00cc1b1e0c6e44009f573e4afe3.png)
4.
![](http://static.xuejinqu.com/qimg/d3d/d3ddf7b623777ee63df5f6bce6532095.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)