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Re: FunctionInterpolation and NIntegrate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg120835] Re: FunctionInterpolation and NIntegrate
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Fri, 12 Aug 2011 05:05:24 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Reply-to: hanlonr at cox.net

f can only be evaluated successfully for numeric arguments so restrict it..

f[r_?NumericQ] := NIntegrate[r + s, {s, 0, 1}]

g = FunctionInterpolation[f[r], {r, 0, 1}]


Bob Hanlon

---- gac <g.crlsn at gmail.com> wrote: 

=============
f[r_] := NIntegrate[r + s , {s, 0, 1}]
g = FunctionInterpolation[f[r], {r, 0, 1}]

Can anyone explain why this works, yet I get the msg: 

NIntegrate::inumr: "The integrand r+s has evaluated to non-numerical values for all sampling points in the region with boundaries {{0,1}}."

Can the statements be reformed to avoid the msg?

Thanks.

Glenn





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