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
把口诀和算式填完整
1×7=7                 一七得七                  7×1=7
2×7=                  二七(                7×2=
3×7=                  三七(                7×3=
4×7=                  四七(                7×4=
5×7=                  五七(                7×5=
6×7=                  六七(                7×6=
7×7=                  七七(                7×7=
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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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