学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.65
所属科目:小学英语
将正确的对话打上“√”,答非所问的对话打上“╳”。
(______) 1. ---What’s your name?                     --- I like red.
(______) 2. --- Mum, this is my new friend(朋友), Bobby.   --- Goodbye!
(______) 3. ---I have a pencil box.                      --- Me too! 
(______) 4. ---Can you speak Chinese?                  ---Yes, I can.
(______) 5. --- Can you dance?                        ---No. I can’t.
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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