Nan came to meet me to take me to her flat. I ran on to the bus stop. Nan said: “Don’t do that!”
We walked by the river and I shouted: “There’s a rat!” I thought it was funny. Nan said: “Don’t do that!”
I knocked on the front door with a rat-a-tat-tat! Nan dropped all the shopping. She said: “Don’t do that!”
I dropped the ketchup. It landed, ker-splat! Nan spilt her tea. She said: “Don’t do that!”
I went into the garden, with my ball and bat, but I stood on the flower. Nan said: “Don’t do that!”
So I got out my book, and I sat on the mat. I tried to be good. Nan said: “Yes! Do that!”
![](https://img./dksih/QBM/2023/6/8/3255338768711680/3255900220694528/STEM/e94870db512740c4be1297409bfcfdd0.png?resizew=128)
![](https://img./dksih/QBM/editorImg/2023/6/9/5abb3714-c471-455c-8717-42cbbe7887a3.png?resizew=161)
![](https://img./dksih/QBM/2023/6/8/3255338768711680/3255900220694528/STEM/552887d23f544e33acfacfe4684a1338.png?resizew=119)
![](https://img./dksih/QBM/2023/6/8/3255338768711680/3255900220694528/STEM/ccd538c4a4084c93a9140e8977c595bc.png?resizew=119)
![](https://img./dksih/QBM/2023/6/8/3255338768711680/3255900220694528/STEM/f425734a8e5e464f8334600518805683.png?resizew=119)
![](https://img./dksih/QBM/2023/6/8/3255338768711680/3255900220694528/STEM/db6841ad103d4c04b8083e65ee08b124.png?resizew=117)
![](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)