programming, using op(), was ..RE: Bugfix for GosperSum? (was: cannot load Zeilberger)
Subject: programming, using op(), was ..RE: Bugfix for GosperSum? (was: cannot load Zeilberger)
From: Raymond Toy
Date: Sun, 07 Jan 2007 10:10:52 -0500
Michel Van den Bergh wrote:
>>> /
>>>
>> />/
>> />/The code tries to computes the shift quotient (that is f(k+1)/f(k) ).
>> />/It failed when expr was a product with a negative constant in front.
>> />/It does not happen that often, thats probably why the author of the
>> />/code missed this case.
>> />/
>> /Can somebody explain to me why just using
>>
>> f(k+1)/f(k)
>>
>> would not have been enough?
>>
>> Michel
>>
> Hmm I see. Maxima does not seem to know that (k+1)!/k!=k+1...
> Fair enough.
>
minfactorial((k+1)!/k!) -> k+1
Ray