8×6= 25÷5= 54÷6= 7×8= 40÷8÷5=
72÷9= 4×8= 18÷2= 5×4= 36÷9×5=
40÷5= 3×9= 8×8= 12÷3= 7×2-6=
7×6= 63÷7= 24÷6= 2×9= 48÷8÷2=
64÷8= 7×1= 35÷7= 81÷9= 3×3×8=
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