7+8= 9+5= 14-5= 9-3=
8+5= 19-9= 8+6= 13-10=
6+9= 8+8= 4+9= 5+7=
0+4= 12-2= 6+7= 9-9=
12-10= 5+6= 11-2= 2+5=
11-7= 9+5= 14-4= 13-10=
7-3= 8-7= 8+6= 7+4=
2+9-1= 8+7-10= 9-2+6= 7+3+4=
7+3-6= 4+5+4= 17-7-3= 2+2+6=
15+4-9= 16-12+4= 9+7-10=
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