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Dr.V.Nirmala, Assistant Professor, Department of Mathematics,University College of Engineering, Tindivanam, (A Constituent College of Anna University),Melpakkam, Tamil Nadu, India. Dr.V.Parimala, Assistant Professor, Department of Mathematics, SriK rishna College ofTechnology, Coimbatore, Tamil Nadu, India. Dr.R.Vennila, Assistant Professor (Sl.G),Department of Mathematics, Kongu Engineering College,Perundurai, Tamil Nadu,India.