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CylindricalGravity

-              v4
+              v5
 In cartesian coordinates, the Laplacian contains only simple derivatives, i.e. does not contain any functions of position as it does in cylindrical or spherical coordinates.
 '''in Cartesian coordinates:'''
+'''in Cartesian coordinates (x,y,z):'''
 [[latex($\nabla^2 = \frac{\partial^2f}{\partial x^2} +  \frac{\partial^2f}{\partial y^2} + \frac{\partial^2f}{\partial z^2} $)]]
 '''in Cylindrical coordinates:'''
+'''in Cylindrical coordinates [[latex($(\rho, \phi, z)$)]]:'''
 [[latex($\nabla^2 = \frac{1}{\rho} \frac{\partial}{\partial \rho}(\rho \frac{\partial f}{\partial \rho}) +  \frac{1}{\rho ^2}\frac{\partial^2 f}{\partial \phi^2} + \frac{\partial^2f}{\partial z^2} $)]]
+[[latex($\nabla^2 = \frac{1}{\rho} \frac{\partial}{\partial \rho}(\rho \frac{\partial f}{\partial \rho}) +  \frac{1}{\rho ^2}\frac{\partial^2 f }{\partial \phi^2}  + \frac{\partial^2f}{\partial z^2} $)]]
+'''in Spherical'''
+'''in Spherical [[latex($(r, \theta, \phi)$)]]:'''
+[[latex($\nabla^2 = \frac{1}{r ^2} \frac{\partial}{\partial r}(r^2 \frac{\partial f}{\partial r}) +  \frac{1}{r ^2 \sin \theta}\frac{\partial}{\partial \theta}(\sin \theta \frac{\partial f}{\partial \theta}) + \frac{1}{r^2 \sin^2 \theta} \frac{\partial^2 f}{\partial \phi ^2}$)]]
 '''and in 2.5 d:'''