SimPEG.electromagnetics.frequency_domain.receivers.PointMagneticFluxDensitySecondary.evalDeriv#
- PointMagneticFluxDensitySecondary.evalDeriv(src, mesh, f, du_dm_v=None, v=None, adjoint=False)[source]#
- Derivative of the projected fields with respect to the model, times a vector. - Parameters:
- srcSimPEG.electromagnetics.frequency_domain.sources.BaseFDEMSrc
- A frequency-domain EM source 
- meshdiscretize.base.BaseMesh
- The mesh on which the discrete set of equations is solved 
- fSimPEG.electromagnetic.frequency_domain.fields.FieldsFDEM
- The solution for the fields defined on the mesh 
- du_dm_vnumpy.ndarray
- The derivative of the fields on the mesh with respect to the model, times a vector. 
- vnumpy.ndarray,optional
- The vector which being multiplied 
- adjointbool
- If - True, return the ajoint
 
- src
- Returns:
- numpy.ndarray
- The derivative times a vector at the receiver(s)