A. Sorry, I can't. B. Thank you, Grandma. C. Can you help me, Mum? D. Who can help me? E. I'm cleaning the room. |
Dingding: It's raining. But I can't find my umbrella.
Mum: Sorry, I can't.
Dingding: Can you help me, Dad?
Dad:
Dingding:
Grandma: I can help you. Look, Dingding. It's under the desk.
Dingding:
Grandma: It's my pleasure.

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

