Stavros Macrakis wrote:
> On 5/16/07, *Doug Stewart* <dastew at sympatico.ca
> <mailto:dastew at sympatico.ca>> wrote:
>
> I was just wondering how it picks U and V, because if it picked it the
> other way around then then it would give sin^2(x)/2 as the answer.
>
>
> Whatever the pattern-matcher picks up first, I suspect, that is,
> essentially an accident of implementation. And no, there is no way to
> control that.
>
> I also tried
> integrate(cos(n*x)*sin(n*x),x,0, t)
> but this doesn't give an answer. Does Maxima know how to do the
> definite
> integral from zero to t ?
>
>
> This works fine for me (see below), as does the corresponding
> indefinite integral. Perhaps this Web interface doesn't support
> asking questions?
>
> integrate(cos(n*x)*sin(n*x),x,0, t);
>
> Is t positive, negative, or zero?
> pos;
>
> 2
> 1 cos (n t)
> --- - ---------
> 2 n 2 n
>
> ------------------------------------------------------------------------
>
> __
Yes the web version does not ask questions so I will use assume(t>0);
Thanks