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7.05×23.7+7.05×76.3 0.125×3.2×2.5 7.8-1.9+8.2-8.1
2.05÷0.82﹢33.6 72.8÷5.6+14.9 5.4×12.3+5.4×7.7
42×101-42 3.6÷1.5÷2 33.4+0.12×50
6.8×0.56＋0.44×6.8 44×2.5×0.9 7.2÷0.5÷0.2
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
