R package RootsExtremaInflections. Implementation of the Taylor Regression Estimator method which is described in Christopoulos (2014,&lt;<a href=””></a>&gt;) for finding the root, extreme or inflection point of a curve, when we only have a set of probably noisy xy points for it. The method uses a suitable polynomial regression in order to find the coefficients of the relevant Taylor polynomial for the function that has generated our data. Optional use of parallel computing under request.