%0 Journal Article %T On the Tau Method for a Class of Non-Overdetermined Second Order Differential Equations %A R.B. Adeniyi %A A.I.M. Aliyu %J Research Journal of Applied Sciences %D 2012 %I %X This study is concerned with the Tau methods for initial value problems in the class of non-overdetermined second order ordinary differential equations. Three variants namely the differential, the integrated and the recursive formulation are considered. The corresponding error estimates for the 3 various are obtained and some selected examples are provided for illustration. The numerical evidences confirm the order of the Tau approximants so obtained for all the cases. %U http://www.medwellonline.net/abstract/?doi=rjasci.2008.438.446