As far as I can tell, this is a bug in maxima. Hopefully someone who
knows maxima better than I do can confirm that.
sage: maxima('integrate(x*abs(x^2-9),x,-6,0)')
162
-M.Hampton
On Nov 19, 11:19 am, Marshall Hampton <[EMAIL PROTECTED]> wrote:
> That looks like a bug. I will check if it is in trac already. Its
> interesting that
> integral(x*abs(9-x^2), x, -3, 0) + integral(x*abs(9-x^2), x, -6, -3)
> returns the correct answer.
>
> -M.Hampton
>
> On Nov 19, 10:50 am, pong <[EMAIL PROTECTED]> wrote:
>
> > Maybe someone has reported this already... but looks like there is a
> > bug in integral
>
> > sage: integral(x*abs(9-x^2), x, -6, 0)
> > 162
>
> > The integrand is negative on (-6,0)
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