- BaseEMSrc.evalDeriv(simulation, v=None, adjoint=False)#
Return derivative of the magnetic and electric source terms with respect to the model.
A tuple (s_mDeriv, s_eDerive). If v is not
None, the method returns the derivatives of the magnetic and electric sources times the vector v. If v is
None, the method returns the functions for multiplying the derivatives with a vector.