Please see the attached file for full problem description.
Q = e^ (i n pi alpha) + e^ (-i n pi alpha)
and Q = 0. How can Q be two different things?© BrainMass Inc. brainmass.com October 9, 2019, 4:10 pm ad1c9bdddf
The proof is centered on the relations Q = e^ (i n pi alpha) + e^ (-i n pi alpha) and Q =0. The solution is well explained.