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MathGroup Archive 2001

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Simplyfying expression

  • To: mathgroup at smc.vnet.net
  • Subject: [mg30624] Simplyfying expression
  • From: Shusaku Yamamoto <shusaku.yamamoto at buseco.monash.edu.au>
  • Date: Fri, 31 Aug 2001 04:09:48 -0400 (EDT)
  • Organization: Monash University
  • Sender: owner-wri-mathgroup at wolfram.com

Hello, thank you very much for helping my previous problem.

I have another problem. I tried simplifying the solutions of a
simultaneous difference equations; i.e. I typed

Simplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63)]
Simplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63),x "set
of" Reals]
FullSimplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63)]

Yet, Mathematica does not simplify the expressions. I know the above
expression can be written as:
-1-5*(3^x)+9(10^x).

If you know how to simplify the above expression, could you let me know?
Thank you very much in advance.


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