Question

what is double intagrational theory​

Answer 1

Answer:

Double integrals are a way to integrate over a two-dimensional area. Among other things, they lets us compute the volume under a surface.

Answer 2

Answer:

As in the case of integral of a function of one variable, a double integral is defined as a limit of a Riemann sum. If the region R is a rectangle [a,b]×[c,d] (Figure 2), we can subdivide [a,b] into small intervals with a set of numbers {x0,x1,…, xm} so that. a=x0<x1<x2<.