- #1
Kushwoho44
- 25
- 1
Hi y'all.
Here is exactly what is stated on the theory page of my book:
Example: Area of a Region
The area of a region R in the xy-plane corresponds to the case where f(x,y)=1.
Area of R= ∫∫dR
Example: Mass of a Region
The mass of a region R in the xy-plane with mass density per unit area ρ(x,y) is given by:
Mass of R= ∫∫ρdR
I'm not at all understanding this first part of the theory, why is it that the area of the region R in the xy-plane is the case f(x,y)=1 and how did they obtain that express for the area R?
All help is immensely appreciated as I'm tearing my hair out over this.Thanks!
Here is exactly what is stated on the theory page of my book:
Example: Area of a Region
The area of a region R in the xy-plane corresponds to the case where f(x,y)=1.
Area of R= ∫∫dR
Example: Mass of a Region
The mass of a region R in the xy-plane with mass density per unit area ρ(x,y) is given by:
Mass of R= ∫∫ρdR
I'm not at all understanding this first part of the theory, why is it that the area of the region R in the xy-plane is the case f(x,y)=1 and how did they obtain that express for the area R?
All help is immensely appreciated as I'm tearing my hair out over this.Thanks!