Title 



On the zeros of and
 
Author 



 
Abstract 



The zeros of Jn(z) ± i Jn+1(z) and [Jn+1(z)]2 − Jn(z)Jn+2(z) play an important role in certain physical applications.At the origin these functions have a zero of multiplicity n (if n¿1) and 2n+2, respectively.We prove that all the zeros that lie in C0 are simple. ZEBEC (Kravanja et al., Comput.Phys.Commun.113(23) (1998) 220238) is a reliable software package for calculating zeros of Bessel functions of the :rst, the second, or the third kind, or their :rst derivatives.It can be easily extended to calculate zeros of any analytic function, provided that the zeros are known to be simple.Thus, ZEBEC is the package of choice to calculate the zeros of Jn(z)±i Jn+1(z) or [Jn+1(z)]2−Jn(z)Jn+2(z).We tabulate the :rst 30 zeros of J5(z) − i J6(z) and J10(z) − i J11(z) that lie in the fourth quadrant as computed by ZEBEC.   
Language 



English
 
Source (journal) 



Journal of computational and applied mathematics.  Antwerp  
Publication 



Antwerp : 2001
 
ISSN 



03770427
 
Volume/pages 



132:2(2001), p. 237245
 
ISI 



000169651500002
 
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