Parametric form or written form of the defining relationship of a function that emphasizes the general form of the rule.

### Example

The function *f* on the set of real numbers defined by the relation *f*(*x*) = A*x*² + B*x* + C is a function defined in general parametric form or general form that in this case is that of a second-degree polynomial. It is the general written form of a second-degree polynomial function.