小雪有54支画笔,小平的画笔支数比小雪的少得多,小可的画笔支数比小雪的多得多,小东的画笔支数比小雪的多一些,小凯的画笔支数比小雪的少一些。小平、小可、小东和小凯可能各有多少支画笔?
99支 | 58支 | 49支 | 12支 | |
小平 | ||||
小可 | ||||
小东 | ||||
小凯 |
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