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
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Hello , everyone ! My name is Lucy , I’m ten . I’m from Australia . I’m a new student .Let me introduce my family to you .There are five people in my family . They are : my father , my mother , my brother and my sister .My father is a driver . My mother is a teacher . My brother is a reporter .Do you know what does my sister do ? She is an actress .She is very beautiful and clever . I love them very much ,And they love me ,too !
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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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