On 10/28/07, Doug Stewart <dastew at sympatico.ca> wrote:
> It works in 5.11.0
> 3
> cos (x)
> (%i1) integrate(-------, x, 1, 2)
> 4
> sin (x)
>
>
> 1 1 1 1
> (%o1) ------ - --------- - ------ + ---------
> sin(2) 3 sin(1) 3
> 3 sin (2) 3 sin (1)
>
> Doug
>
>
> Mario Rodriguez wrote:
> > This is what I get with current cvs maxima:
> >
> >
> >
> > (%i12) integrate(cos(x)^3/sin(x)^4,x);
> > (%o12) (3*sin(x)^2-1)/(3*sin(x)^3) ====> ok
> > (%i13) integrate(cos(x)^3/sin(x)^4,x,1,2);
> > Integral is divergent
> > -- an error. To debug this try debugmode(true);
> >
> >
> > I'm sure maxima could calculate the definite integral above in the past.
> > This output is from a document I wrote about one year ago:
> >
> > (%i28) integrate(cos(x)^3/sin(x)^4,x,1,2);
> > 1 1 1 1
> > (%o28) ------ - --------- - ------ + ---------
> > sin(2) 3 sin(1) 3
> > 3 sin (2) 3 sin (1)
> >
But not in 5.13.0:
(%i1) integrate(cos(x)^3/sin(x)^4,x,1,2);
Integral is divergent
-- an error. To debug this try debugmode(true);
(%i2)
Paul