Radial-Cylindrical Coordinates. Steady 1-D.

The Lapace Equation for steady 1-D Green's Function in radial-cylindrical coordinates is:

$${\frac{1}{r}}$$$${\frac{d}{dr}}$$$$\left(\vphantom{ r\frac{dG}{dr}}\right.$$r$${\frac{dG}{dr}}$$ $$\left.\vphantom{ r\frac{dG}{dr}}\right)$$ = - $$\delta$$(r - r^$\prime$)