The isFactorised method checks that a mathematical expression is in factorized form. It can handle polynomials up to degree 2, with a single variable.
When using isFactorised, Field must be specified. Authors can select between the following depending on the type of expression they are dealing with:
integer
real numbers
complex numbers
isFactorised doesn’t take any value and is generally used as a supporting method in conjunction with equivSymbolic.
Additional Options
Allow thousands separatorAuthors 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.
Examples
Example 1
isFactorised does not take any value, which means when used alone it will validate any mathematical expression presented in its factorized form.
Figure 1: isFactorised does not take any value
Combining Methods
Example 2
In this example, we use isFactorised combined with equivSymbolic. The whole expression is entered into the equivSymbolic value field in the validation area to ensure students responses are factorised and also match the expression.
Figure 2: Combining isFactorised with equivSymbolic