S spruancejr May 2010 43 7 May 22, 2010 #2 Let's review the properties of i: \(\displaystyle i = sqrt (-1) \) \(\displaystyle i^2 = -1 \) \(\displaystyle i^3 = -i \) \(\displaystyle i^4 = 1 \) each set of i iterates in this fashion which means \(\displaystyle i^5 = sqrt(-1)\) Reactions: alessandromangione

Let's review the properties of i: \(\displaystyle i = sqrt (-1) \) \(\displaystyle i^2 = -1 \) \(\displaystyle i^3 = -i \) \(\displaystyle i^4 = 1 \) each set of i iterates in this fashion which means \(\displaystyle i^5 = sqrt(-1)\)