The isSimplified method checks if a value is in its most simplified version. isSimplified does not take any value and is generally used as a supporting method in conjunction with equivSymbolic.
Additional Options
Allow decimal marksAuthors can specify what separators can be used by the student. From the Thousand Separator drop-down menu you can select dot, comma, and/or space. The Decimal Separator menu contains the option for either a dot or a comma. Note that the specified thousand separator and decimal separator cannot be the same, e.g. both dot.