Stevic, StevoTollu, Durhasan T.2024-02-232024-02-2320190170-42141099-1476https://doi.org/10.1002/mma.5600https://hdl.handle.net/20.500.12452/10625An analysis of semi-cycles of positive solutions to eight systems of difference equations of the following form xn=a+pn-1qn-2pn-1+qn-2,yn=a+rn-1sn-2rn-1+sn-2,n is an element of N0,where a is an element of [0, + infinity), the sequences p(n), q(n), r(n), s(n) are some of the sequences x(n) and y(n), with positive initial values x(-j),y(-j), j = 1,2, is conducted in detail, and it is shown that these systems can be solved in closed-form, which is the main result here. Two methods for showing the solvability are described.eninfo:eu-repo/semantics/closedAccessClosed-Form FormulaSystem Of Difference EquationsSolvabilityArticle4210357936152-s2.0-85063799241Q1WOS:000470931800010Q210.1002/mma.5600