I cannot reproduce your result. I get:

   (^%_2) d. _1
|nonce error

(nonce error means it's not implemented but an implementation should be doable.)

-- 
Raul

On Sat, Apr 25, 2015 at 12:25 PM, Jon Hough <[email protected]> wrote:
> Doing :
> (^&_2) d. _1  fails, in the sence that the result is
> [
> which seems odd. (_2 can be replaced with any neg integer with the same 
> result). I do not know how I should interpret this.Clearly the result is not 
> correct. But I would have thought J's d. conjunction could have figured out 
> the correct answer
> _1&*@:(^&_1)
> since it can figure out the correct antiderivative of more 
> difficultfunctions, like ^. .Anyway, I would like ot know if this is a bug 
> with J or I am doing something wrong. Both the dictionary adn NUVOC don't 
> seem to shed light on this.
> Regards,Jon
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