学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.40
所属科目:小学英语
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My diary
Date: the 5th of October
Day: Sunday
Yesterday, I ___(am not, was not)very busy. I ______(was, were) at Su Hai and Su Yang’s home. There___(was,were)many things on the second floor. There ___ (was, were) two dolls. And there ____ (was, were) a TV. We _______(play played) a lot of interesting games. We ___ (was, were) very happy. It ___(is , was)a fun day!
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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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