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# Re: Sqrt Problems
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
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