n a = a a a .... a sebanyak n Keterangan : a → Basis atau Bilangan Pokok n → Pangkat 1 1. a = a → a R a 2. 1 = 1 → a R 0 1 3. a = → a 0 a 4. 0 = 0 → a 0 a → n + − 5. ( a) = n jika n genap − a → n jika n ganjil 2