RT Journal Article T1 The existence of a solution for nonlinear fractional differential equations where nonlinear term depends on the fractional and first order derivative of an unknown function A1 Aleksic, Suzana A1 Cabada Fernández, Alberto A1 Dimitrijevic, Sladjana A1 Tomovic Mladenovic, Tatjana V. K1 Fractional Differential Equations K1 Green’s Functions K1 Boundary Value Problem AB In this paper, we consider the existence of solutions of the nonlinear fractional differential equation boundary-value problem Dα* u(t) = f (t, u(t), u′(t), CDβu(t)), 0 < t < 1, 1 < α < 2, 0 < β ≤ 1, u(0) = A, u(1) = Bu(η), where 0 < η < 1, A ≥ 0, Bη > 1, Dα* is the modified Caputo fractional derivative of order α, CDβ is the Caputo fractional derivative of order β, and f is a function in C([0, 1] × R × R × R). Existence results for a solution are obtained. Two examples are presented to illustrate the results. PB Faculty of Sciences and Mathematics, University of Nis, Serbia SN 0354-5180 YR 2023 FD 2023 LK https://hdl.handle.net/10347/39699 UL https://hdl.handle.net/10347/39699 LA eng NO This work was supported by the Serbian Ministry of Science, Technological Development and Innovations (Agreement No. 451-03-47/2023-01/ 200122). The second author is partially supported by MCIN/AEI/PID2020-113275GB-I00 and by “ERDF A way of making Europe”, by the “European Union”, and by Xunta de Galicia (Spain), project EM2014/032. DS Minerva RD 26 abr 2026