A.一盒卡游奥特曼卡片68元,3盒一共多少钱? |
B.弟弟一分钟跳绳60个,姐姐一分钟跳绳个数是弟弟的3倍,姐姐一分钟跳绳多少个? |
C.白巧克力有2颗,黑巧克力比白巧克力多6颗数,黑巧克力有多少颗? |
D.金金今年12岁,妈妈比金金大24岁,妈妈今年多少岁? |
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