Ningsih, Elsa Sukma2019-01-142019-01-142019-01-14wahyu sari yenihttp://repository.unri.ac.id/handle/123456789/9567This article discusses a new approach to approximate a function using the second derivative estimation of the Taylor series obtained by modifying the Taylor series in three different ways. Computational test results show that the value of the approximation using the modification of Taylor series is closer to the exact value than those of the normal Taylor series approximation value. The comparison of the three modified Taylor series is presented in the form of tables and graphs.enTaylor seriesaproximation functionderivativeerror analysiscomputational timeArticle