Magnus Expansion Method for Solving Singularly Perturbed Turning Point Problems Having Boundary Layers
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In this paper, Magnus expansion method which is based on Lie groups and Lie algebras is presented to solve singularly perturbed boundary value problems having boundary layers. Numerical results are obtained by using different step sizes and small epsilon values which makes the problem stiff or nonstiff. In addition, maximum errors norms with L-infinity are tabulated in detail to show efficiency of the method.