OFFSET
1,1
COMMENTS
Also the first root of the sinc(4,x) function, that is, the radial component of the 4D Fourier transform of 4-dimensional unit sphere. Also, the solution of 2J_1(x) = x*J_0(x). - Stanislav Sykora, Nov 14 2013
LINKS
Stanislav Sykora, K-Space Images of n-Dimensional Spheres and Generalized Sinc Functions.
Eric Weisstein's World of Mathematics, Bessel Function Zeros.
EXAMPLE
5.1356223018406825563...
MATHEMATICA
RealDigits[BesselJZero[2, 1], 10, 100][[1]] (* Amiram Eldar, May 18 2021 *)
PROG
(PARI) solve(x=5, 6, besselj(2, x)) \\ Charles R Greathouse IV, Feb 19 2014
(PARI) besseljzero(2) \\ Charles R Greathouse IV, Aug 06 2022
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Jan 21 2006
STATUS
approved