SimPEG.electromagnetics.viscous_remanent_magnetization.Simulation3DLogUniform.Jtvec_approx

Simulation3DLogUniform.Jtvec_approx(m, v, f=None)

Approximate effect of transpose of J(m) on a vector v. :param numpy.ndarray m: model :param numpy.ndarray v: vector to multiply :param Fields f: fields :rtype: numpy.ndarray :return: JTv