Author Details

Masta, Al Azhary, <span lang="EN-US">Mathematics Study Program, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung 40154, Indonesia</span>, Indonesia



© 2017 Department of Mathematics
Jalan Bioteknologi No. 1, Kampus USU, Medan - Indonesia
University of Sumatera Utara