Problem with evaluation of integration



Thanks to a reader of this list, I now see that my post missed the mark on 
several points--loading
abs_integrate does nothing for the problem. Sorry.

--Barton

maxima-bounces at math.utexas.edu wrote on 02/17/2011 06:01:03 AM:

>
> By the way:
> 
>  (%i1) load(abs_integrate)$
>  (%i2) integrate(a^x,x);
>  (%o2) a^x/log(a)
> 
>  (%i3) integrate(x*a^x,x);
>  (%o3) ((log(a)*x-1)*%e^(log(a)*x))/log(a)^2
> 
> --Barton
> 
> -----maxima-bounces at math.utexas.edu wrote: -----
> 
> 
>When I'm using the integrate function to evaluate an expression, sometimes
> 
>Maxima gives me a value after calculation. But sometimes it just gives me
> >a formal mathematical expression. For example, when I enter this:
> 
> >integrate(e^(-x),x,1,5);
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