TY - JOUR ID - TI - Using Banach Fixed Point Theorem To Study The Stability Of First-Order Delay Differential Equations AU - Zaid A. A. Mahdi Monje AU - Buthainah A. A. Ahmed PY - 2020 VL - 23 IS - 1 SP - 69 EP - 72 JO - Al-Nahrain Journal of Science مجلة النهرين للعلوم SN - 26635453 26635461 AB - In this paper we use the Banach fixed point theorem investigate the stability and asymptotic1 stability of the zero solution for the first order retarded delay differential equation=-∑_ j= ^N▒〖 b_j (t ,〖 3y〗 _t )3y(t)+f(t ,〖 3y〗 _t)〗 where the delay is constant. Also we give new conditions to ensure the stability and asymptotic stability of the zero solution of this equation.

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