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RE: Numerical Integration

  • To: mathgroup at
  • Subject: [mg22368] RE: [mg22323] Numerical Integration
  • From: Chiam Sim Ai <engp8949 at>
  • Date: Sat, 26 Feb 2000 22:04:55 -0500 (EST)
  • Sender: owner-wri-mathgroup at


Realised that the two commands copied from Mathematica do not appear in the
actual form in my previous message.  Sorry for using the wrong text form.
What I meant were as flow:

1.  NIntegrate[f(x),{x,0,n}]

2.  N[Integrate[f(x),{x,0,n}]]


Sim Chiam

-----Original Message-----
From: Chiam Sim Ai [mailto:engp8949 at]
To: mathgroup at
Subject: [mg22368] [mg22323] Numerical Integration

Dear all,

I would like to find out the difference between the following two commands
on Mathematica:

1.   <<...OLE_Obj...>> 

2.   <<...OLE_Obj...>> 

Is there anything wrong in writing in the 2nd way?  Can anyone tell me the
difference between the algorithm used by Mathematica (Versions 3 & 4) in
performing the above two operations?

For a same problem, both commands give the same numerical answer but the 2nd
has an error message.  Can anyone tell me why?

Best regards,
Sim A. Chiam
National University of Singapore

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