User Guide

For example, define a function that squares its argument.
square := x -> x^2:>
square(32);>
For more information on functions, see Functional Operators (page 292).
Protected Names
Protected names are valid names that are predefined or reserved.
If you attempt to assign to a protected name, Maple returns an error.
>
Error, attempting to assign to `sin` which is protected
For more information, refer to the ?type/protected and ?protect help pages.
Unassigning Names
The unassign command resets the value of a name to itself. Note:You must
enclose the name in right single quotes ('').
>
>
Right single quotes (unevaluation quotes) prevent Maple from evaluating
the name. For more information on unevaluation quotes, see Delaying
Evaluation (page 317) or refer to the ?uneval help page.
See also Unassigning a Name Using Unevaluation Quotes (page 319).
2.9 Names • 57