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| help go find price crying cook is can’t straight 110 |
Binbin and Robin are talking at home.
Binbin: Hi! Robin. I’m hungry. Can you
Robin: No, I
Binbin: There is a new Lanzhou noodles restaurant. But I can’t
Robin: I can help you! Let’s
They are on the street now.
Binbin: Look! A little boy is
Robin: Yes. Let’s go and see.
They come to the boy.
Binbin: Can I
Boy: I can’t find my home.
Binbin: Let me call
Boy: Thank you!
Robin: Let’s go to Lanzhou noodles restaurant. Go
Binbin: Yes! Here it
Robin: Look! Half
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
