*To*: mathgroup@smc.vnet.net*Subject*: [mg12149] Re: Sqrt Problems*From*: dreissNOSPAM@nospam.earthlink.net (David Reiss)*Date*: Mon, 27 Apr 1998 01:46:31 -0400*Organization*: EarthLink Network, Inc.*References*: <6hpb0f$d3s@smc.vnet.net>

In article <6hpb0f$d3s@smc.vnet.net>, PAUL REISER <REISER@HRTS.NRL.NAVY.MIL> 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 The expression in question is not equal to 1: In[1]:= u = Sqrt[a + I*b/a]*Sqrt[a^2 + I*b]/Sqrt[a] Out[1]= (Sqrt[a^2 + I*b]*Sqrt[a + (I*b)/a])/Sqrt[a] In[2]:= Expand[u^2] Out[2]= a^2 + 2*I*b - b^2/a^2 Perhaps you made a mistake when you typed the input line that you wanted? -- David Reiss dreissNOSPAM@nospam.earthlink.net http://home.earthlink.net/~dreiss To send personal email, remove the words "nospam" and "NOSPAM" from the email address