学进去-教育应平等而普惠
试题
类型:脱式计算
难度系数:0.65
所属科目:小学数学
怎样算简便就怎样算。
112.79-58.64-9.36                                                                   47.87-19.5-7.87-10.5
64.45+8.57+35.55+1.43             48.54-9.98                           87.38-12.34+12.62-7.66
27.3+73.2+72.7                           585+189+215                           5.85-1.75-0.25
768-274-126                           5.85+1.89+2.15                           24.8+14.6+15.4
42.5-22.17-7.83                           3.8+1.37+6.2+12.63               2.5+3.25+0.75+7.5
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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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