Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

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The roots of $ J_0(z)-iJ_1(z)=0$


Author: D. A. Macdonald
Journal: Quart. Appl. Math. 47 (1989), 375-378
MSC: Primary 33A40
DOI: https://doi.org/10.1090/qam/998110
MathSciNet review: 998110
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Abstract: Synolakis [1] has proved that the equation

$\displaystyle {J_0}\left( z \right) - i{J_1}\left( z \right) = 0$

has no zeros in the half plane Im $ z > 0$. In this note a table of the first thirty roots, correct to $ O\left( {{{10}^{ - 6}}} \right)$, is presented and an asymptotic formula, which is correct to better than one tenth of one percent for the smallest zero, is derived.

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DOI: https://doi.org/10.1090/qam/998110
Article copyright: © Copyright 1989 American Mathematical Society


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