Egbetade, S.A. and Adebisi, A.L. 2025. NUMERICAL SOLUTION OF FIRST AND SECOND ORDER DIFFERENTIAL EQUATIONS USING THE TAU METHOD WITH AN ESTIMATION OF THE ERROR . FUDMA JOURNAL OF SCIENCES. 9, 3 (Mar. 2025), 119 - 121. DOI:https://doi.org/10.33003/fjs-2025-0903-3346.