... A(t)x(t) +Ni=1Ai(t)x(t − h i) + B(t)u(t) + B1(t)ω(t), t ≥ 0,z(t) = C(t)x(t) + D(t)u(t), t ≥ 0, ✭✷✳✶✺✮x(t) = φ(t), t ∈ [ h, 0], h ≥ 0.ớ h = max {h 1, h 2, , h N} t ó ị ❧ý s❛✉✸✺ P trì ... ε2 h) I]x(t), x(t) + 2P (t)B1(t)ω(t), x(t)+2P (t)A1(t)x(t − h) , x(t) − ε1x(t − h) 2 2tthx(s)2ds.ì2tthx(s)2ds 0, t 0, sử ụ ổ ➤Ò ✶✳✺✳✶ ❝ã2P (t)A1(t)x(t − h) , ... A1(t)tt h x(s)ds, t ≥ 0,x(t) = φ(t), t ∈ [ h, 0],tr♦♥❣ ➤ã h ≥ 0; x(t) Rn A(t), A1(t) Rnìn tr❐♥ ❧✐➟♥ tô❝❝❤♦ tr➢í❝ tr➟♥ R+✱ φ ∈ C([ h, 0], Rn) ❧➭ ❤➭♠ ❜❛♥ ➤➬✉ ✈í✐ ❝❤✉➮♥φ = supt∈[ h, 0]φ(t).◦...