Hello Edward, Is there a PDF version that I can download? It seems that the link you have offered takes me to the edit mode on the document.
Thanks, Yuvaraj On Tue, Dec 11, 2012 at 4:21 PM, Edward Mokurai Cherlin < [email protected]> wrote: > On Tue, December 11, 2012 1:49 pm, km wrote: > > What is the coolest way of programming the quadratic formula in J? We > are > > finding the roots of polynomial c + x*(b + x*a) without using p. . > > I can't claim the coolest implementation, but you should certainly be > aware of my work on a J edition of Iverson's Algebra: An Algorithmic > Treatment. It also has working code for solving cubics and quartics > apart from p. . > > booki.treehouse.su/algebra-an-algorithmic-treatment/_v/1.0/edit/ > > qe=.3 : 0 > ('c';'b';'a')=.y > ((-b)+(1 _1*%:(*:b)-4*a*c))%2*a > ) > > > I offer > > > > roots > > 3 : 0 > > 'a b c' =. y > > q =. %: (b^2) - 4*a*c > > (2*a) %~ (-b) + q,-q > > ) > > roots 1 3 2 > > _1 _2 > > roots 1 0 1 > > 0j1 0j_1 > > roots 1 _2 1 > > 1 1 > > > > partly as problem definition. I am looking for cool roots verbs! > > > > Kip Murray > > -- > Edward Mokurai (默雷/निशब्दगर्ज/نشبدگرج) Cherlin > Silent Thunder is my name, and Children are my nation. > The Cosmos is my dwelling place, the Truth my destination. > http://wiki.sugarlabs.org/go/Replacing_Textbooks > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
