10+8= 10+2= 13+2= 8+2+3=
8+10= 17-7= 19-3= 9+1+4=
18-8= 10+9= 3+11= 7+3+5=
18-10= 3+10= 16-4= 7+4+6=
10+1= 10+2= 19-4= 7+8+3=
7+10= 10+10= 19-5= 6+4+7=
11-1= 14-4= 15-3= 8+2+5=

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

