Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2006
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

Integrate with multiple integrals -- bug?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg67377] Integrate with multiple integrals -- bug?
  • From: Martin Schoenecker <ms_usenet at gmx.de>
  • Date: Wed, 21 Jun 2006 02:12:31 -0400 (EDT)
  • Organization: Technische Universitaet Darmstadt
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

I am wondering where my or Mathematica's error in reasoning lies:

In[1]:= Integrate[g[z], {x, 0, a}]
Out[1]= a*g[z]

ok, because the function g does not depend on x.

In[2]:= Integrate[g[z], {z, 0, c}]
Out[2]= Integrate[g[z], {z, 0, c}]

ok, function g is not specified at the moment.

In[3]:= Integrate[g[z], {z, 0, c}, {x, 0, a}]
Out[3]= Integrate[a*g[z], {z, 0, c}]

also ok.  Now with the integration order reversed:

In[4]:= Integrate[g[z], {x, 0, a}, {z, 0, c}]
Out[4]= a*g[z]

?? why this result ??


  • Prev by Date: Problems editing a mathematica package, please help.
  • Next by Date: Re: Sturm-Liouville (eigenvalue/eigenfunction) problems
  • Previous by thread: RE: Problems editing a mathematica package, please help.
  • Next by thread: Re: Integrate with multiple integrals -- bug?