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| 1÷0.2= | 0.85×0.24= | 7.5÷3= | 3.6÷6= |
| 1.7÷17= | 10﹣2.8= | 3.5+4.32= | 0.5×6.4= |
| 5.04÷0.01= | 3.75×1.2= | 4.13+3= | 0+2.5= |
| 0.7+0.2×1.5= | 0.125×99×0= | 2.3+1.7﹣2= | 2.5×0.4÷3= |
同类型试题
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
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
