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11+9 = 80 – 3 = 95 – 4 = 64 + 3 = 65 + 3 =
98 – 4 = 25+7 = 62 – 2 = 83 + 5 = 15 – 3 =
83 +10 = 10+8 = 56 + 20 = 64 + 6 = 30 – 3 =
29 – 7 = 35 + 2 = 73 + 4 = 25 + 4 = 32 + 6 =
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
