A. yo-yo B. bottle C. hankie D. sticker |
1.
![](http://static.xuejinqu.com/qimg/417/4175187f6ac4633f002d9c0904598e59.png)
2.
![](http://static.xuejinqu.com/qimg/17f/17f49c3016d27207d5101f77e19207a3.png)
3.
![](http://static.xuejinqu.com/qimg/138/13862f2513b7db8d30faacf19edc8160.png)
4.
![](http://static.xuejinqu.com/qimg/ba9/ba9272cbcfee812e1d1aec4c5291d04f.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)