MaplePrimes - answers and comments on Question, Calculating matrix

subscripts

acer — Fri, 03 Feb 2012 12:10:34 Z

As a general rule, never use a name like `N` without any subscript if you are also using it as an indexed name (which gets printed with a subscript).

So here we can use N0 and N1 instead of N[0] and N[1] (which display as and ).

restart:

N0:=s->1-s;

                           s -> 1 - s

N1:=s->s;

                             s -> s

N:=s->[N0(s), N1(s)];

                      s -> [N0(s), N1(s)]

N(s);
                           [1 - s, s]

N(4);
                            [-3, 4]

If you don't like this workaround, and if you want to get confused as a new user, then search for "atomic identifiers" as another (subscripted) solution.

By the way, the square backets are giving you lists, which are not the same as Matrices in Maple.

acer

Thank you very much. This is really helpful.

serena88 — Fri, 03 Feb 2012 13:45:28 Z

Thank you very much. This is really helpful.

check working

serena88 — Mon, 20 Feb 2012 17:43:45 Z

@acer

Hi Acer, I have written a worksheet that gives me correct answers. However, it seems very complicated and doesn't seem to be the right way to do it. I am using too many "map" and "zip" in it. I will be using and editting this worksheet for a couple more month. Is there a way that i can send it over to you someone to check and see if you can simplify or see what is it that i'm doing wrong.

Please advice. Thanks

sure

acer — Mon, 20 Feb 2012 18:54:46 Z

@serena88 Sure, although my spare time is limited this month.

You could post it here, in this thread

..or you could email it to me (I'll contact you, so you have my address)

..or you could upload it to the Maple Cloud (see my profile page, for a cloud group where it would be private)