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Published in:
2018 | OriginalPaper | Chapter
17. Integration of Functions of Two Variables
Authors : Michael Oberguggenberger, Alexander Ostermann
Published in: Analysis for Computer Scientists
Publisher: Springer International Publishing
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Abstract
In Sect. 11.3 we have shown how to calculate the volume of solids of revolution. If there is no rotational symmetry, however, one needs an extension of integral calculus to functions of two variables. This arises, for example, if one wants to find the volume of a solid that lies between a domain D in the (x, y)-plane and the graph of a non-negative function \(z = f(x, y)\). In this section we will extend the notion of Riemann integrals from Chap. 11 to double integrals of functions of two variables. Important tools for the computation of double integrals are their representation as iterated integrals and the transformation formula (change of coordinates). The integration of functions of several variables occurs in numerous applications, a few of which we will discuss.