(In reply to
Not much to this one by FrankM)
"There is only the trivial solution C=+-1, D=0."
But (C, D) = (-1, 0) seems to lead to a contradiction, since in that situation:
lhs of the given equation is equal to 1, while the rhs is equal to -1
Edited on April 15, 2008, 3:53 pm