学进去-教育应平等而普惠
试题
类型:解答题
难度系数:0.64
所属科目:小学数学
按要求排排队
(1)80040700,80400700,84000700按从小到大的顺序排列是:
                                                                                   
(2)46000,46万,406000,407000按从大到小的顺序排列是:
                                                                                   
(3)867000,687000,1124000,3999888这四个数四舍五入到万位后,再按从小到大的顺序排列是:
                                                                                   
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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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