Solve for V by knowing that the difference in potential energy is the dot product of the electric field and the infinitesimal path length integrated over the entire path of the particle (from `b` to `a` ). Let `a` be a point in the x=0 plane (where V=0) and let `b` be and arbitrary positioned point. Once we find the potential at point `b` we can call this the potential at any point x.

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