学进去-教育应平等而普惠
试题
类型:材料作文
难度系数:0.15
所属科目:初中英语
根据第二节(回答问题)材料并结合以下要点写一篇80词以上的英文短文。要点:1.你初中阶段幸福吗?请举例说明;2.为了使自己以后更幸福,你有些什么打算?注意:不得出现人名和校名等真实信息。
                                                                                                       
                                                                                                   
                                                                                                  
                                                                                                  
                                                                                                  
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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

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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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