学进去-教育应平等而普惠
试题
类型:书面表达
难度系数:0.85
所属科目:小学英语
按要求写出下列句子。
(1)Jenny’s stamps were on the table before.(改为一般疑问句,并作否定回答)
                                                                 
(2)weather was cold yesterday.(写出问句)
                                                                 
(3)s shoes are clean now.(用yesterday evening改写句子)
                                                                 
(4)npainted a picturelast Tuesday.(就划线部分提问)
                                                                 
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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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