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PAUL REISER wrote: > > Forgive me if this is a simple question, but I am trying to get "1" out > of the following expression and I can't seem to figure out how: > > u = Sqrt[a+I*b/a] * Sqrt[a^2+I*b] / Sqrt[a] > > Is there a package I'm missing or something? > > Thanks - > Paul Reiser I don't see why your expression should equal one. I think it is equal to + or - (a + I b)/a. The best mathematica will return even using ComplexExpand, FullSimplify etc, is Sqrt[(a^2 + I b^2)/a^2] The only way I could figure out to get it to simplify assuming reals is with the package RealOnly. -- Remove the _nospam_ in the return address to respond.