A slab of material with conductivity , electric permittivity , and magnetic permeability occupies the infinite

A slab of material with conductivity σ, electric permittivity , and magnetic permeability μ occupies the infinite volume between the planes y = ±d.
(a) Find the steady-state magnetic field inside the slab if a magnetic field B0 = ẑB₀ exp(−iωt) is present everywhere outside the slab. Assume that the frequency is low enough that the quasi-magnetostatic limit is valid.
(b) Sketch the t = 0 field in the limit when the skin depth δ >> d and also when δ << d.