*To*: mathgroup@smc.vnet.net*Subject*: [mg12136] Re: [mg12042] Sqrt Problems*From*: Sean Ross <seanross@worldnet.att.net>*Date*: Mon, 27 Apr 1998 01:46:19 -0400*References*: <199804240552.BAA13221@smc.vnet.net.>

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.

**References**:**Sqrt Problems***From:*PAUL REISER <REISER@HRTS.NRL.NAVY.MIL>