9-7= 10-4= 9+9= 7+8= 5+7=
5+6= 6+3= 4+5= 2+6= 8+6=
8-5= 4-2= 8+9= 7+7= 4+8=
6+8= 5+5= 2+8= 6-3= 14-10=
9+7= 5+8= 9+6= 4+9= 8-4=
7-1-5= 4+4+3= 1+8+3= 9-1+8= 7+2+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