2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/10503The Cauchy problem in the LTB model is formulated. The rules of calculating three undetermined functions which defined a solution in the LTB model are presented. One example of exact nonhomogeneous model is studied. The limit transformation to the FRW model is shown.LaTeX, 12 pages, Invited talk at the Cosmion'96 Int. Conf. 1996; submitted to Gravitation and AstrophysicsAstrophysicstext