Function and functional imperatives Function a function is a complex of activities directed towards meeting a need or needs of the system Functional imperatives There are four functional imperatives that are necessary for all systems-adaptation(a), goal attainment(G), integration (I), and latency (L),or pattern maintenance.Function and functional imperatives • Function A function is a complex of activities directed towards meeting a need or needs of the system • Functional imperatives There are four functional imperatives that are necessary for all systems—adaptation(A), goal attainment(G), integration(I), and latency(L),or pattern maintenance