Nila Destia Nasra Departement of Mathematics,
Faculty of Mathematics and Natural Sciences, Andalas University,
Kampus Unand LimauManis Padang, Indonesia, 25163
Arrival Rince Putri Departement of Mathematics,
Faculty of Mathematics and Natural Sciences, Andalas University,
Kampus Unand LimauManis Padang, Indonesia, 25163
Mahdhivan Syafwan Departement of Mathematics,
Faculty of Mathematics and Natural Sciences, Andalas University,
Kampus Unand LimauManis Padang, Indonesia, 25163