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0.4×3= 2.8×5= 1.7×0.3= 2.5×4=
0.2×0.5= 0.4×2.4= 0.7×9= 0.4×0.3=
1.25×0.8= 6×0.4= 3×0.26= 0.08×7=
0.7×0.5= 0.9×0.6= 0.5×0.8= 0.4×0.7=
0.8×0.6= 0.6×0.7= 0.5×0.9= 0.4×0.3=
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
