WorksheetSeriesSum[Product[δ,n],n,ConstE,PositiveInfinity]Product[PositiveInfinity,δ]WorksheetSeriesSum[Product[δ,n],n,ConstE,100]Divide[Product[Sum[ConstE,Negative[Exponent[ConstE,2]],10100],δ],2]EquationSymbolicSolveRequest[List[Equal[SeriesSum[Product[δ,n],n,ConstE,100],x]],List[x]]Solution[{x,ExpressionSetPoint[Divide[Product[Sum[ConstE,Negative[Exponent[ConstE,2]],10100],δ],2],False,ReservedReal]}]GraphingShow2D[PlotEq2D[Equal[SeriesSum[Product[δ,n],n,ConstE,100],x],Options[Option[RangeX,-4220.525,14315.855],Option[RangeY,-23170.475,23170.475]]],Options[Option[ArgRangeValue,δ,0,1.26,2],Option[RangeX,-4220.525,14315.855],Option[RangeY,-23170.475,23170.475]]]