A.学校要购买127套文具,每套8元,准备1000元够吗? |
B.明明1分钟可以打74个字,他可以在4分钟内录完280个字吗? |
C.超市运来6箱桃子,梨的箱数是桃子的4倍,梨运来了多少箱? |
D.甲、乙两地相距200千米。爸爸开车从甲地去往乙地,平均每小时行驶95千米。爸爸2小时能到达乙地吗? |
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