University of Guilan Journal of Mathematical Modeling 2345-394X 12 3 2024 09 01 On differential-integral optimal control problems 451 462 7705 10.22124/jmm.2024.26520.2338 EN Mohammed Shehata Department of Basic Science, Bilbeis Higher Institute For Engineering, Sharqia, Egypt Journal Article 2024 01 20 In this paper, we will study the  optimal control problem of a system containing a differential integral (D-I) operator. We will deduce the necessary optimality conditions and apply it first to the problem of minimum energy to find the lowest energy for an electrical circuit containing a resistor, a coil and a capacitor (RLC circuit), and second to the problem of the minimum time to transfer electrical current in  RLC circuit from one state to another in the shortest possible time.  optimal control differential-integral equations minimum energy problem minimum time problem https://jmm.guilan.ac.ir/article_7705_ff7dc9fc66e0d1e655efce51f03a2821.pdf