Integrate question

[DrD]

(10-20-2017 05:58 PM)parisse Wrote:  

(10-20-2017 04:43 PM)DrD Wrote:  ... frustration has just been added to the poor soul who wants a simple answer to a simple question, "is my hand calculation correct?" Well ... no, not according to CAS/xcas.

As I have already commented, if you want to check an antiderivative computed by hand, the best method is to derive the expression, precisely to avoid the constant problem. Using a CAS properly requires some training, this is unavoidable.
(Sorry for my bad English, imagine if you had to discuss in French)

... frustration has just been added to the poor soul who wants a simple answer to a simple question, "is my wxMaxima calculation correct?" Well ... no, not according to CAS/xcas.

... frustration has just been added to the poor soul who wants a simple answer to a simple question, "is my Wolfram Alpha calculation correct?" Well ... no, not according to CAS/xcas.

And so forth .... Et ainsi de suite ... (Excusez mon français)

You don't need to repeat your comments, we all are saying that we understood your explanations. We all understood that CAS/xcas isn't wrong. The issue isn't that CAS is inconsistent. We respect your work and expertise.

I don't think I could make a better case for this, even if I was fluent in French. I have encountered a few things in CAS now, that don't play well with real world examples. That's just the way it is. Software is not "God" to paraphrase an admirable man, whose work and expertise is quite remarkable!

Judge Judy:

Quote:We're done here.