The convert function is used to convert an expression from one form to another. For information on supported conversions, see the convert help page.  The unrecognized conversion error occurs when one or more unknown arguments are passed to the convert function.

Solution:

In this case, an argument is missing.  See the convert/temperature help page for the correct calling sequence.

Example 2

Solution:

 Maple is case-sensitive.  Here, the form argument begins with an uppercase letter, when it should begin with a lowercase letter. See convert/degrees for the correct calling sequence.