6×7= 30÷5= 63÷7= 9×2=
21÷3= 40+8= 3×9= 5×8=
54÷6= 8÷8= 45÷5= 18÷3=
8×9= 4×7= 24÷3= 14-7=
7×5+8= 2×6-9= 35÷7×8= 5×5+5=
2×4×3= 48÷8÷3= 9×4÷6= 24÷6÷4=
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