“…Al-Salhi; find numerical solution of non-linear Volterra integral equations of the second kind [3], Al-Kahachi; Approximate method for solving Volterra integral equations of the first kind [2], Abd-Al-Hammeed; Numerical solution of Fredholm integro-differential equations using spline functions [1]. concentrated where the grid points are most distant, this of course; is not the entire story, as it also depends on the spectrum of the data itself,…”