>
> Hmm, I can't reproduce this problem. I am working w/ Maxima 5.34.1. 
>
>   (%i1) display2d : false $ 
>   (%i2) foo : 1/log(x)^2 $ 
>   (%i3) integrate (foo, x, 2, 3); 
>   (%o3) gamma_incomplete(-1,-log(3))-gamma_incomplete(-1,-log(2)) 
>   (%i4) %, numer; 
>   (%o4) 1.273097216447114 
>   (%i5) integrate (foo, x); 
>   (%o5) gamma_incomplete(-1,-log(x)) 
>   (%i6) ev (%, x=3) - ev (%, x=2); 
>   (%o6) gamma_incomplete(-1,-log(3))-gamma_incomplete(-1,-log(2)) 
>   (%i7) %, numer; 
>   (%o7) 1.273097216447114 
>


 

>   
> Looks like Maxima handles the definite and indefinite integrals as 
> expected. Or perhaps I have misunderstood the problem? 
>
>
Nope, you've just confirmed that the way Sage handles incomplete gamma 
evaluation is broken somehow.  I've 
opened http://trac.sagemath.org/ticket/17328 for this.

 

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