Tìm y(n) = x(n) + rect3(-n) biết.x(n) ={0, 1, 2, 3, 4, 0} A. y(n) ={0, 1, 3, 4, 5, 0}

y(n) ={0, 1, 3, 4, 5, 0}

y(n) ={0, 1, 1, 2, 3, 0}

y(n) ={0, 1, 1, 3, 3, 4, 0}

y(n) ={0, 1, 1, 2, 2, 3, 4,0}