In http://www.jsoftware.com/jwiki/PrimitivePrimitives substitutes are defined.
R.E. Boss > -----Oorspronkelijk bericht----- > Van: programming-boun...@jsoftware.com [mailto:programming- > boun...@jsoftware.com] Namens R.E. Boss > Verzonden: donderdag 9 februari 2012 12:26 > Aan: 'Programming forum' > Onderwerp: Re: [Jprogramming] typo in concrete math companion, ([.) > > see http://www.jsoftware.com/help/release/status.htm#4.05 when [. and ]. > were introduced and http://www.jsoftware.com/help/release/noncpat.htm > where > they were removed. > > > R.E. Boss > > > > -----Oorspronkelijk bericht----- > > Van: programming-boun...@jsoftware.com [mailto:programming- > > boun...@jsoftware.com] Namens Bo Jacoby > > Verzonden: donderdag 9 februari 2012 12:12 > > Aan: Programmingforum > > Onderwerp: [Jprogramming] typo in concrete math companion, ([.) > > > > > > > > http://www.jsoftware.com/books/pdf/cmc.pdf chapter 5, page 44, says > > > > The binomial theorem expresses a power of a sum (that is, (x+y)^t) as an > > equivalent > > weighted sum of products of ascending powers of x and descending > powers > > of y: > > x=: 3 [ y=: 5 [ t=: 4 [. Ei=: i.@>: > > > > I didn't understand [. , nor did the interpreter. > > > > |spelling error > > | x=: 3 [ y=: 5 [ t=: 4 [. Ei=: i.@>: > > | ^ > > > > > > I guessed that is was supposed to say > > x=: 3 [ y=: 5 [ t=: 4 [ Ei=: i.@>: > > but that doesn't work either: > > x > > 3 [ (5 [ (4 [ (i.@>:))) > > y > > 5 [ (4 [ (i.@>:)) > > t > > 4 [ (i.@>:) > > Ei > > i.@>: > > > > > > - Bo > > ---------------------------------------------------------------------- > > For information about J forums see > http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
