Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2004
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2004

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: can't MATHEMATICA simplify simple expressions?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51541] Re: can't MATHEMATICA simplify simple expressions?
  • From: "Jean.Pellegri" <Jean.Pellegri at wanadoo.fr>
  • Date: Thu, 21 Oct 2004 22:21:10 -0400 (EDT)
  • References: <cl4tg0$8g7$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In[12] := Simplify[(a^2)^(3/2), Element[a, Reals]]


Out[12] = Abs[a]^3



In[10] := Simplify[(a^2)^(3/2), Element[a, Reals] && a >= 0]


Out[10] = a^3



The correct result is a^3 only when a is real and a>=0

jean pellegri



"Cole Turner" <REMOVEcole.tuner at liwest.at> a écrit dans le message de
news:cl4tg0$8g7$1 at smc.vnet.net...
> if I enter:
>
> FullSimplify [ (a^2)^(3/2) ]
>
> (in correct MATHEMATICA syntax, the program does not yield the correct
> result, a^3 ...
>
> why is that?
>
> thanks!
> -- 
> Johnny: [plugging back in the runway lights]
>           "Just kidding."
>                    ('Airplane!', 1980)
>



  • Prev by Date: Re: can't MATHEMATICA simplify simple expressions?
  • Next by Date: Re: can't MATHEMATICA simplify simple expressions?
  • Previous by thread: Re: can't MATHEMATICA simplify simple expressions?
  • Next by thread: Re: can't MATHEMATICA simplify simple expressions?