学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
看图读句子,判断正误。并在正确的句子前写“T”,在错误的句子前写“F”。
( )(1)Point to the chair.
( )(2)He sits on the desk.
( )(3)He stands on the chair.
( )(4)A teacher is in the classroom.
( )(5)Hello,bird!
( )(6)Point up!
( )(7)Point down!
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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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