specifies a numeric
constant, variable, or expression.
Range
nu ≥ 0
x
specifies a numeric
constant, variable, or expression.
Range
x ≥ 0
Details
The JBESSEL function
returns the value of the Bessel function of order nu evaluated at x (For more information, see Abramowitz and Stegun 1964; Amos, Daniel,
and Weston 1977).