学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
从Ⅱ栏中选出与Ⅰ栏句子相匹配的应答。
Ⅰ                                    Ⅱ
(1) (   )Come here.                        
(5) (   )It’s a crayon.                     E. It’s a bag.
A.It’s red.(2) ( )What’s this on the desk?B.Fine, thank you. (3) ( ) How are you?C.OK.(4) ( )What colour is it?D.Oh, I see.
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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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