学进去-教育应平等而普惠
试题
类型:书面表达
难度系数:0.65
所属科目:小学英语
作文。
暑假就要到了,你打算怎么样度过暑假呢?结合下图的提示,写一写你的暑假生活吧。
                       
go to the cinema              watch videos               write stories
                 
go on a train           sweep the floor             go swimming
                                                                                    
                                                                                    
                                                                                     
                                                                                     
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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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