Note the two different definitions. http://en.wikipedia.org/wiki/Horner's_method
f=: 13 :'+`*/ }:,x,.y' g=:(#.|.)~ (|. 1 4 _72 _214 127 1602 _5040) p. 3 _9000 (|. 1 4 _72 _214 127 1602 _5040) f 3 _9000 (|. 1 4 _72 _214 127 1602 _5040 ) g 3 _9000 Linda -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Elton Wang Sent: Tuesday, May 14, 2013 9:54 AM To: [email protected] Subject: Re: [Jprogramming] Does #. Use Horner rule inside Raul, The task is on Horner rule, which does not mean polynomial evaluation in general. Anyway, I added a direct solution to the wiki as horner =: 4 : ' (+ *&y)/x'. On May 14, 2013, at 7:54 AM, Elton Wang <[email protected]> wrote: > In Rosetta code Horner code item, it uses (#.|.)~ as a solution. Is this right? I thought this is plain polynominal sum rather than horner rule, since for x#.y, the product scan of x is calculated first? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
