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A School Trip
Attention, please! I have something important to say. We’ll go for a school trip to the science museum this Friday. Here are some rules that we have to follow.
To start with, you must be quiet in the museum. If you speak loudly, the workers in the museum will ask you to leave. Next, don’t take photos in the museum. Because it’s bad for the paintings. But you can take a pen and a notebook to write down some important things. Finally, keep the museum clean and tidy while visiting. By the way, please call 2436-7866 if you have any questions. I hope we will have a good time there. That’s all, thank you.
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同类型试题
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
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
