newbie question: how to take element from an array on command line

[salvomic]

(12-27-2017 08:57 PM)Arno K Wrote:  I totally forgot about that as I ususally always work in CAS. So here a solution is:
L1:=iquorem(63,23);
L1(1), recalls the first element of the result, that is 2
Arno

Right...
Maybe it is useful a more general way, that would be valid both in CAS and Home, to extract elements from matrices and vectors [].
i.e. in Home M1(2,3) is ok but [[1,2,3],[4,5,6],[7,8,9]] [2,3] tries to multiply, instead of extracting elements (in CAS that's ok).