Re: Bug in Mathematica ?

• To: mathgroup at smc.vnet.net
• Subject: [mg60804] Re: [mg60779] Bug in Mathematica ?
• From: cmduncan at mines.edu
• Date: Thu, 29 Sep 2005 05:41:14 -0400 (EDT)
• References: <200509280541.BAA08394@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```I got the same answer plugging and chugging by copying and pasting your email
into Mathematica (v5.1):

In[1]:=
Integrate[Max[x,y],{x,0,1},{y,0,1}]
NIntegrate[Max[x,y],{x,0,1},{y,0,1}]

Out[1]=
!(2/3)

Out[2]=
0.666667

Chris Duncan

Quoting Bidule <toto at truc.com>:

> Hi,
>
> I've computed the following two expressions:
>
> Integrate[Max[x, y], {x, 0, 1}, {y, 0, 1}]
> NIntegrate[Max[x, y], {x, 0, 1}, {y, 0, 1}]
>
> which result in very different numbers. When I calculate the integral by
> hand I get (2/3).
>
> Any thoughts ? I guess by now it's probably a known bug. (or maybe even
> a 'feature').
>
> B.
>
>

```

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