2+10= 7+8= 10+4= 5+5= 16-10=
16-6= 6+5= 10-5= 13-4= 17-5=
19-8= 12-9= 3+6= 9+5= 5+7=
14+6= 8+6= 12-6= 6+9= 9+9=
6+5+4= 13-7-3= 20-5-10= 12+3+5=
14-4+6= 20-( )=8 9+( )=16 ( )-2=12
10-( )=10 ( )+8=17
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