newRPL: all results mode?

[emece67]

(01-22-2016 09:13 AM)Nigel (UK) Wrote:  I have a question: if 4 √ returns {2 -2} and 9 √ returns {3 -3}, then 4 √ 9 √ + would return {5 -5} if list addition acts element-by-element. However, there are four possible answers: {5 1 -1 -5}.

Is it intended that {a b} {c d} + returns { {a+c a+d} {b+c b+d} }?

And 4 √ 9 √ * would return {6 6}, 6, {6 -6} or even {{6 -6} {-6 6}}?

I guess that this interesting construct can give rise to many traps.