⑴122÷2≈□, 378÷5≈□, 435÷7≈□, 297÷4≈□, 21÷8≈□,
⑵181÷3≈□, 359÷6≈□, 440÷9≈□, 38÷7≈□, 323÷4≈□,
⑶469÷8≈□, 178÷3≈□, 63÷6≈ □, 790÷2≈□, 194÷6≈□,
⑷65÷7≈□, 360÷5≈□, 162÷4≈□, 410÷6≈□, 135÷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

