A. book B. pencil C. ruler D. rubber |
1.
![](https://img./dksih/QBM/2020/9/21/2554521626787840/2556671993282560/STEM/a9450648a11d460485ec348fc8b0d15b.png?resizew=106)
2.
![](https://img./dksih/QBM/2020/9/21/2554521626787840/2556671993282560/STEM/280f1525b6824a62bcbc98599ffb3f47.png?resizew=67)
3.
![](https://img./dksih/QBM/2020/9/21/2554521626787840/2556671993282560/STEM/016d483006284d8ba1e7d8f482e91dfa.png?resizew=81)
4.
![](https://img./dksih/QBM/2020/9/21/2554521626787840/2556671993282560/STEM/9af1dafbbc7a44ab8ae5af44dcb3612a.png?resizew=67)
![](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)