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1IntroductionNumericalmethodsarewidelyusedinmanyfields.Forexample,inVLSLCAD,layolltparameterssuchasresistanceandcapacitancecanbeextractedbymeansofnumericalmethods.ThreeofthenumericalmethodscommonlyusedareFiniteElemelltMethod(FEM),FiniteDifferenceMeth