lt was carried out an approximation to the joint of equations obtained from the stability analysis of a plasma with solar abundance Ibáñez, Steele, and Higuera (1995), Higuera (1995). Theses consisted in make the coeflicient Ñ (stability or instability factor) equal to zero (marginal state) permitting to execute an algorithm that solves the equations derived. The numerical integration shows the behavior of the center temperature Tc with respect to the boundary temperature n, as well as the dependency between the parameter ∈• with Tc in the laminar structure.