Dear Barton,
Thanks for your very quick reply. However there is still a problem. As
I said, I work with Maxima version 5.18.1, front end: wxMaxima 0.8.2.
The command load(abs_integrate)$ goes through successfully, but
load(hyperint)$ does not; Maxima responds with:
Could not find `hyperint' using paths in
file_search_maxima,file_search_lisp.
-- an error. To debug this try debugmode(true);
I searched in the folder you mentioned, share/contrib, but did not find
anything like hyperint there. What am I missing?
Thanks.
Shailesh
On Wed, 10 Mar 2010 04:47:11 +0530 wrote
>Try:
(%i1) load(abs_integrate)$
(%i2) load(hyperint)$
(%i3) extra_integration_methods :
cons('hyper_int,extra_integration_methods)$
(%i4) integrate(1/((x-1)^(6/5)*(x+3)^(4/5)),x);
(%o4) -(5*((x-1)/4+1)^(1/5))/(4^(4/5)*(x-1)^(1/5))
Check:
(%i5) ratsimp(diff(%,x));
(%o5) 1/((x-1)^(6/5)*(x+3)^(4/5))
Another example:
(%i6) integrate((x-1)^(6/5)*(x+3)^(4/5),x);
(%o6)
(5*4^(4/5)*hypergeometric([-4/5,11/5],[16/5],-(x-1)/4)*(1-x)^2*(x-
1)^(1/5))/11
The functionality of hyperint is undocumented, and the function isn't
well tested (the hyperint code is in share/contrib).
--bw
maxima-bounces at math.utexas.edu wrote on 03/09/2010 05:04:53 PM:
> [Maxima] Evaluation of integral
> Shailesh Ashok Shirali
> 03/09/2010 05:09 PM
> I work with Maxima version 5.18.1, front end: wxMaxima 0.8.2. I find
that it stumbles on this integral:
> integrate(1/((x-1)^(6/5)*(x+3)^(4/5)),x)
> though the answer is a fairly easy one:
> -(5/4) *(x + 3)^(1/5)/(x - 1)^(1/5).
> Shailesh