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MathGroup Archive 2005

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Re: solve() problem since new ROM update

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57019] Re: [mg56926] solve() problem since new ROM update
  • From: "David Annetts" <davidannetts at aapt.net.au>
  • Date: Thu, 12 May 2005 02:33:57 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Mike, 

This looks like a question for a HP-4? Newsgroup ....

> I have tried multiple problems (simple ones albiet) to solve 
> while in ALG mode.
> SOLVE(x^4 - 1 = 3, x)
> but this provides no result. Just returns the question with no answer.
> The answer should be x = -Sqrt(2) or x = sqrt(2).

Mathematica and my HP-48GX agree here to 11 decimal places -- there are 4
roots +/-Sqrt[2] and +/-I * Sqrt[2].

> The example works in RPN, but I use both environments 
> depending what I am doing. It worked before the upgrade. 

Maybe you need to try upgrading your ROM again?

> Am I missing something here!

Mathematica by the looks of things ...

Regards,

Dave.


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