梅花树 | 12棵 |
樱花树 | 比梅花树多8棵 |
玉兰树 | 栽成2行,每行14棵 |
女贞树 | 比樱花树棵数的2倍少6棵 |
国槐树 | 15棵 |
银杏树 | 是樱花树的3倍 |
(1)玉兰树比樱花树多多少棵?
(2)银杏树的棵树是国槐树的多少倍?
(3)如果列式为(12+8)×2-6+15,该提怎样的数学问题?
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