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