SimPEG.electromagnetics.time_domain.sources.BaseTDEMSrc.evalDeriv#
- BaseTDEMSrc.evalDeriv(simulation, time, v=None, adjoint=False)[source]#
- Derivative of magnetic and electric source terms time a vector at a given time - Parameters:
- simulationSimPEG.electromagnetics.base.BaseTDEMSimulation
- An instance of a time-domain electromagnetic simulation 
- time
- The time at which you want to compute the derivative 
- vnumpy.ndarray
- A vector 
- adjointbool
- If - True, return the adjoint operation
 
- simulation
- Returns:
- tuple
- 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.