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How to convert functionsto a form in terms of standard special

  • To: mathgroup at smc.vnet.net
  • Subject: [mg105253] How to convert functionsto a form in terms of standard special
  • From: paperkite rainyday <paperkite at gmail.com>
  • Date: Wed, 25 Nov 2009 06:13:44 -0500 (EST)

Hi, all.



I want to know is there any function in mathematica which is similarly to

convert(...., StandardFunctions) in another system?



I want to convert functions represented in terms of hypergeometric

functions and Meijer G functions to a form in terms of standard special and
elementary functions.



For example, in another system,

convert(MeijerG([[],[5/2]],[[2,3],[]],x),StandardFunctions);

you will get

(1/(2 Sqrt[Pi]) x^3 Exp[-x/2] (BesselK[0,x/2]+BesselK[1,x/2]).



But in mathematica,

FunctionExpand[MeijerG[{{},{5/2}},{{2,3},{}},x]]

do not give the result you want.



Thanks


paperkite



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