Author/Authors :
Balasubramanian، S. نويسنده Department of Mathematics,Government Arts College (Autonomous),Karur,India , , Sandhya، C. نويسنده Department of Mathematics,C.S.R.Sarma College,Ongole,India , , Vyjayanthi، P. Aruna Swathi نويسنده Dravidian University,Kuppam,India ,