Interpolation is an estimation of a value within two known values in a sequence of
values. Newton’s divided difference interpolation formula is an interpolation
technique used when the interval difference is not same for all sequence of values.
Suppose f(x 0 ), f(x 1 ), f(x 2 )………f(x n ) be the (n+1) values of the function y=f(x)
corresponding to the arguments x=x 0 , x 1 , x 2 …x n , where interval differences are not same.