Learning Guide Learning Guide

5.4 Evaluation Rules • 201> q := evaln(q);q := q> divide( x^2-y^2, x-y, q );true> q;x + yThe rem, quo, irem, and iquo commands behave in a similar manner.Concatenation of NamesConcatenation is a way to form new variable names based on others.> a||b;abThe concatenation operator, “||”, in a name causes evaluation of theright-hand side of the operator, but not the left.> a := x;a := x> b := 2;b := 2> a||b;a2> c := 3;c := 3