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Unformatted text preview: T3-1City University of Hong Kong Electronic Engineering Semester B 2007-2008 EE3108 Engineering Analysis Tutorial 3 There are many useful specialized functions in engineering. These special functionstypically have complicated expressions, but are standard solutions to well known equations. In this tutorial, we examine one family of special functions called the Besselfunctions. The Bessel function of the first kind of order mis defined as: ∑∞=++−=2)2()!(!)1()(kmkkmxkmkxJ. Although the expression is complicated, it can be imagined as the sinusoidal functions of cylindrical coordinates. For instance, wave motions in the cylindrical systems can be described using the Bessel functions. In addition, Matlab has a built-in command for it: BesselJ(m,x). In the following, we use different approaches to find the first root of the 0thorder function. I. Graphical methodUsing the below script file, we can obtain the plot of a few Bessel functions. By simply magnifying the graphs, find the first root of...
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This note was uploaded on 01/11/2011 for the course EE 3108 taught by Professor Nelsonszechunchan during the Spring '07 term at City University of Hong Kong.
- Spring '07