Infinite body, spherical coordinate, steady 1-D.

RS00 Infinite body, 0  $\leq$  r < $\infty$.

4$$\pi$$G_R00(r $$\left\vert\vphantom{ \,r^{\prime }}\right.$$ r^$\prime$$$\left.\vphantom{ \,r^{\prime }}\right.$$) = $$\left\{\vphantom{ \begin{array}{cc} -1/r^{\prime } & \text{for }r<r^{\prime } \\ -1/r & \text{for }r>r^{\prime } \end{array} }\right.$$$$\begin{array}{cc} -1/r^{\prime } & \text{for }r<r^{\prime } \\ -1/r & \text{for }r>r^{\prime } \end{array}$$ $$\left.\vphantom{ \begin{array}{cc} -1/r^{\prime } & \text{for }r<r^{\prime } \\ -1/r & \text{for }r>r^{\prime } \end{array} }\right.$$