Acceleration of the Universe in f(R) Gravity Models
  A general formalism for the investigation of the late time dynamics of the
universe for any analytic f(R) gravity model, along with a cold dark matter,
has been discussed in the present work. The formalism is then elucidated with
two examples. The values of the parameters of the models are chosen in such a
way that they are consistent with the basic observational requirement.
