For ,
(1)
| |||
(2)
|
where
is a zeroth order Bessel function of
the first kind and
is a zeroth order Bessel
function of the second kind.
For ,
(1)
| |||
(2)
|
where
is a zeroth order Bessel function of
the first kind and
is a zeroth order Bessel
function of the second kind.
Weisstein, Eric W. "Mehler's Bessel Function Formula." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MehlersBesselFunctionFormula.html