Argyros, I.K.George, S.Erappa, S.M.2026-02-062021Communications in Computer and Information Science, 2021, Vol.1345, , p. 260-26918650929https://doi.org/10.1007/978-981-16-4772-7_21https://idr.nitk.ac.in/handle/123456789/30340We study Multipoint methods using only the first derivative. Earlier studies use higher than three order derivatives not on the methods. Moreover Lipschitz constants are used to find error estimates not presented in earlier papers. Numerical examples complete this paper. © 2021, Springer Nature Singapore Pte Ltd.Ball convergenceLipschitz constantRadius of convergence