pub fn hermite(n: u32, x: f64) -> f64
Physicists’ Hermite polynomial H_n(x). H_0 = 1, H_1 = 2x, H_{n+1} = 2x H_n − 2n H_{n-1}.
H_n(x)
H_0 = 1
H_1 = 2x
H_{n+1} = 2x H_n − 2n H_{n-1}