(1)收集信息,完成填空。
一班 | 二班 | 三班 | 四班 | 五班 | |
三年级 | 25 | 5 | 33 | ||
四年级 | 32 | 23 | 20 | 27 |
(2)三三班比三一班多订了5份,三三班订
(3)三四班订的份数是三二班的6倍,三四班订
(4)三、四年级订的总份数一样多,四五班订
(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