学进去-教育应平等而普惠
试题
类型:听音判断
难度系数:0.85
所属科目:小学英语
Tom和Rani正在谈论朋友的家人、职业与国籍,请你根据听到的内容判断下列说法是(T)否(F)正确,请试一试吧!
( )1. Jim is from England.
( )2. Lily is from Beijing, China.
( )3. Peter is my father.
( )4. This girl is Jim's sister.
( )5. Lily's father is a farmer.
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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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