57+8= 34-6= 6+45= 37-9= 80-5=
42+3= 38+5= 8+63= 90-7= 33+7=
76-8= 4+29= 53-8= 74-5= 60-4=
78-70= 86-60= 78-9= 34-20= 34-4=
65-60+17= 82-2+13= 6+80-9= 83-40+8=
50-30+78= 20-7+40= 9+40-20= 68-60+27=
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