9.1.4  Preventing evaluation

You can prevent an expression from being evaluated by quoting it, either by preceding it with ’ or with the quote or hold command.

Remark.

If a is a variable, then a:=quote(a) (or a:=hold(a)) is equivalent to purge(a) (for the sake of Maple compatibility). It returns the value of this variable (or the hypothesis done on this variable).

Example

or: