Solving First Order differential equation using Extrapolation method.

We use Extrapolation to increase better approximation of initial value problem

Extrapolation was used in for the approximation of definite integrals, where we
found that by correctly averaging relatively inaccurate trapezoidal approximations exceedingly
accurate new approximations were produced. we will apply extrapolation
to increase the accuracy of approximations to the solution of initial-value problems.