A. Point to the blackboard. B. Happy birthday, Linda. C. How are you? D. Look, my sister is a teacher. E. How many fingers? Ten fingers. |
1.
![](https://img./dksih/QBM/2023/4/26/3225053395689472/3231820582764544/STEM/86cd3277044b4b7da18930aac49f8d21.png?resizew=106)
2.
![](https://img./dksih/QBM/2023/4/26/3225053395689472/3231820582764544/STEM/e6d47a90e1ed4419a14190583d8a90d8.png?resizew=112)
3.
![](https://img./dksih/QBM/2023/4/26/3225053395689472/3231820582764544/STEM/d0cda8c3d7734fa5bb085fe247c9d99d.png?resizew=112)
4.
![](https://img./dksih/QBM/2023/4/26/3225053395689472/3231820582764544/STEM/5c1086215e7b419d91b2d95d0fdd97ea.png?resizew=111)
5.
![](https://img./dksih/QBM/2023/4/26/3225053395689472/3231820582764544/STEM/0289d61907ae4f449a4548c535558a2f.png?resizew=118)
![](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)