(1)如下:
因数 | 15 | 15×2 | 15×10 | 15 | 15 |
因数 | 18 | 18 | 18 | 18×2 | 18×10 |
积 | 270 | 270×2 |
(2)如下:
因数 | 120 | 120÷5 | 120÷10 | 120 | 120 |
因数 | 50 | 50 | 50 | 50÷5 | 50÷10 |
积 | 6000 | 6000÷5 |
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