besseli

Modified Bessel function of the first kind, I_n(x).

Syntax

v = besseli(x, n, s)

Description

Returns the modified Bessel function of the first kind. Grows exponentially for large x. With s = 1, returns exp(-|x|) · I_n(x).

Example

besseli(1, 0)          % ≈ 1.2661

See also

• besselj — Bessel function of the first kind, J_n(x).
• besselk — Modified Bessel function of the second kind, K_n(x).