学进去-教育应平等而普惠
试题
类型:口算和估算
难度系数:0.85
所属科目:小学数学
计算,看看谁算的又快又准确.
4-4=                                   3+2=
2-2=                                   0+1=
1-0=                                   5-4=
3-1=                                   4-2=
3-3=                                   4+1=
2+0=                                 4-4=
1+1=                                 1-1=
5-2=                                   5-3=
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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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