Sie-Long Kek 1 , Mohd Ismail Abdul Aziz 2 1 Department of Mathematics, Centre for Science Studies, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor Darul Takzim, Malaysia. 2 Department of Mathematics, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia. Abstract. A rapid development of digital computer has brought great chang...