I meant I think the answer should be 0 not %pi. Unless you say assume(n=m);
----- Original Message -----
From: "Richard Hennessy" <rvh2007 at comcast.net>
To: "Edwin Woollett" <woollett at charter.net>; "maxima mailing list"
<maxima at math.utexas.edu>
Sent: Wednesday, September 10, 2008 10:35 AM
Subject: Re: [Maxima] integrate returns undefined
> In this case I don't think Maxima should ask anything. The answer should
> be
> %pi.
>
> Rich
>
> ----- Original Message -----
> From: "Edwin Woollett" <woollett at charter.net>
> To: "maxima mailing list" <maxima at math.utexas.edu>
> Sent: Tuesday, September 09, 2008 3:15 PM
> Subject: integrate returns undefined
>
>
>> integrate(..) returns undefined when it
>> should know the answer.
>>
>> (%i1) declare( [ m, n ], integer )$
>> (%i2) assume ( m > 0, n > 0 )$
>> (%i3) integrate( cos(m*x)^2, x, 0, 2*%pi );
>> (%o3) %pi
>> (%i4) integrate( cos(m*x)*cos(n*x), x, 0, 2*%pi );
>> Is n - m positive, negative, or zero?
>>
>> zero;
>> (%o4) undefined
>>
>> Is this a known bug?
>>
>> Ted Woollett
>>
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