5×2= 16÷2= 5×5= 12÷6= 3×3×3=
21÷7= 2×9= 3×6= 7÷7= 64÷8÷4=
8×4= 28÷4= 6×5= 16÷4= 81÷9×5=
7×5= 36÷4= 9×8= 9÷3= 48÷8÷3=
63÷7= 54÷9= 56÷8= 8×5= 49÷7×2=
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