Please see attached Mathcad (prime 5)- Won't let me past the picture. So pic also attached.
Exceeds 2000 words or something
The vectirization (arrow over t) never is necessary and its confusing. use it only if you calculate with vectors, not with ranges!
t is a range, but Rows is a vector - thats the reason for the different answers.
A range is not a vector but kind of an implicit loop. It has 0 rows.
Its an undocumented trick that a range is turned into a vector if you use inline evaluation.
x:=1..5 is a range, but
y:=1..5= is a vector.
Here's a little image showing what Werner is talking about.
As you can see, using inline evaluation, T := t = [row vector] provides the results you desire.