template.class_template.SymmetryOrbitEQN.costgrad¶
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SymmetryOrbitEQN.
costgrad
(eqn, **kwargs)[source]¶ Gradient of cost function; optional unless cost was defined
- Parameters
- eqnOrbit
Orbit instance whose state is an evaluation of the governing equations
- kwargsdict
extra arguments for rmatvec method.
- Returns
- gradient :
An Orbit instance whose state and parameters (i.e. orbit_vector) contain gradient information.