72÷8= 8×7= 4×7= 8×5=
35+23= 6×8= 9×3= 35÷7=
8×3= 34+25= 28÷4= 36÷4=
7×7= 9×9= 24÷3= 27÷9=
4×8= 45-23= 9×5= 45÷5=
49÷7= 7×8= 4×5= 3×6=
81÷9= 56÷8= 4×4= 4×6=
56+24+12= 35-15+35= 77+13-24= 47-27-13=
83+7-20= 64-54+48= 96-36-25= 100-45+25=
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