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9 ÷ 3 = 24 ÷ 4 = 12 ÷ 3 = 3 ÷ 3 = 8 ÷ 2 =
36 ÷ 6 = 18÷3 = 18－9 = 12 ÷ 2 = 20÷ 5 =
25 ÷ 5 = 16 ÷ 4 = 4 × 5 = 4 × 7 = 15 ÷ 3 =
10 ÷ 2 = 30 ÷ 6 = 81－60 = 15 ÷ 5 = 6 × 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
