besselj

Bessel function of the first kind, J_n(x).

Syntax

v = besselj(x, n, s)

Description

Returns the Bessel function of the first kind of order n at x. With s = 1, returns the scaled version exp(-|imag(x)|) · J_n(x). Standard in cylindrical-symmetric wave problems.

Example

besselj(2.4048, 0)     % ≈ 0  (first zero of J_0)

See also

• bessely — Bessel function of the second kind, Y_n(x).
• besseli — Modified Bessel function of the first kind, I_n(x).
• besselk — Modified Bessel function of the second kind, K_n(x).
• hankel — Hankel function, H_nu^(k)(z) = J_nu(z) ± i Y_nu(z).