I can't see the images in your email, so can't see what 'integrate'
functionality you are trying to use. Could you re-send using text instead
of images? Please use display2d:false and cut-and-paste the whole
interaction. In general, symbolic definite integrals with +/- inf limits
should work:
(%i1) integrate(1/(x^2+1),x,minf,inf); <<< minf is equivalent to -inf --
both should work
(%o1) %pi
(%i2) integrate(1/(x^2+1),x,-inf,inf);
(%o2) %pi
(%i3) integrate(1/(x^2+1),x,-inf,23);
(%o3) atan(23)+%pi/2
(%i4) integrate(1/(x^4+1),x,-inf,inf);
(%o4) %pi/sqrt(2)
On Sun, Dec 11, 2011 at 14:57, Julien Martin <balteo at gmail.com> wrote:
> Hello,
> I am trying to transpose the following into maxima:
>
> =-1.2816
> =-1.0364
>
>
> Can anyone please advise?
>
> Julien.
>
> P.S. I get this: *defint: lower limit of integration must be real; found
> -inf*
> * -- an error. To debug this try: debugmode(true);*
>
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>