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## Main Question or Discussion Point

Let be the S function being the action in physics S=S(x,y,z,t) satisfying the equation:

[tex]\frac{dS}{dt}+(1/2m)(\nabla{S})^{2}+V(x,y,z,t)=0 [/tex]

where V is the potential is there any solution (exact) to it depending on V?

[tex]\frac{dS}{dt}+(1/2m)(\nabla{S})^{2}+V(x,y,z,t)=0 [/tex]

where V is the potential is there any solution (exact) to it depending on V?