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MathGroup Archive 2005

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Re: numerical solutions to two non algebraic equations.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55506] Re: [mg55492] numerical solutions to two non algebraic equations.
  • From: "Matthias Bode" <lvsaba at hotmail.com>
  • Date: Sun, 27 Mar 2005 02:42:38 -0500 (EST)
  • References: <200503260739.CAA21843@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hello Robert:

1. MathWorld:
"The decimal expansion of a number can be found in Mathematica using the 
command RealDigits[n], or equivalently, RealDigits[n, 10]. " (See also: 
HelpBrowser).

2.
FindRoot[Sin[x] - Exp[-x], {x, 3}]

{x -> 3.0963639608966513}

FindRoot[x^9^x == 9, {x, 1}]

{x -> 1.1790679941306466}

Best regards,

MATTHIAS BODE
Torres Sofer III, depto. 9 A
Pedro Borda #1072
esq. Ismael Vásquez
COCHABAMBA/BOLIVIA

CEL: +591-70 71 56 64
TEL/FAX: +591-4-4 53 34 17
LVSABA at HOTMAIL.COM
Time indicated: UTC (=GMT).


----- Original Message ----- 
From: "Robert G. Wilson v" <rgwv at rgwv.com>
To: mathgroup at smc.vnet.net
Subject: [mg55506] [mg55492] numerical solutions to two non algebraic equations.


> Hello,
>
> I am trying to get the decimal expansion of solution to
> sin(x)-exp(-x)=0 around pi, its about 3.093639, and the decimal
> expansion of solution to x^(9^x)=9, its about 1.179.
>
> Thank you for your time and consideration.
>
> Bob.
>
> 


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