Oscillation of first-order nonlinear differential equations with deviating arguments

This paper is devoted to the study of the oscillatory behavior of solutions of the first-order nonlinear functional differential equations \[ ( A ) x ′ ( t ) = ∑ i = 1 N q i ( t ) f i ( x ( g i ( t ) ) ) + F ( t , x ( t ) , x ( g 1 ( t ) ) , … , x ( g N ( t ) ) ) , {array}{*{20}{c}} x’(t) = ∑ i = 1^N {{q_i}(t){f_i}(x({g_i}(t)))} \\ + F(t,x(t),x({g_1}(t)), … ,x({g_N}(t))), {A} \\ {array} \] \[ ( B )