pub fn bessel_y(n: u32, x: f64) -> Option<f64>Expand description
Bessel function of the second kind Y_n(x), integer order n ≥ 0. Requires x > 0
(singular at the origin) → None otherwise. Order 1 via the Wronskian
J_1 Y_0 − J_0 Y_1 = 2/(πx); higher via Y_{n+1} = (2n/x)Y_n − Y_{n-1}.