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This paper is devoted to study the energy problem in general relativity usingapproximate Lie symmetry methods for differential equations. We evaluatesecond-order approximate symmetries of the geodesic equations for the stringycharged black hole solutions. It is concluded that energy must be re-scaled bysome factor in the second-order approximation.

Re-Scaling of Energy in the Stringy Charged Black Hole Solutions using Approximate Symmetries