| Package | Description | 
|---|---|
| org.hipparchus.analysis.differentiation | 
   This package holds the main interfaces and basic building block classes
   dealing with differentiation. | 
| Modifier and Type | Method and Description | 
|---|---|
| FieldGradientField<T> | FieldGradient. getField()Get the  Fieldto which the instance belongs. | 
| static <T extends RealFieldElement<T>> | FieldGradientField. getField(Field<T> valueField,
        int parameters)Get the field for number of free parameters. | 
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