- #1

- 2

- 0

[tex]\Phi''+\frac{1+2\nu}{\tau}\Phi'+k^2\Phi=\lambda\psi(\tau)[/tex]

where we use prime to denote the derivative with [tex]\tau[/tex], [tex]\nu[/tex]

and [tex]\lambda[/tex] are real constant parameter.

how to get the green function of bessel's differential equation?