Cho tích phân kép , D là miền giới hạn bởi các đường
Miền lấy tích phân D là:

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

The total number of dental clinics total for the last 12 months was recorded

Which strategy is used by public health to reduce the incidence of food poisoning?