Find a General Asymptotic Approximation (AsymptoticRSolveValue)
A linear ordinary difference equation (OΔE) can be approximated by a general asymptotic series expansion of the form 
when it has a irregular singular at 
. This example shows how to obtain such an approximation using AsymptoticRSolveValue.
Find an asymptotic series solution for a linear OΔE with a irregular singular point.
Pick a value for the arbitrary constant.
Plot the approximation along with the exact solution. The two are visually indistinguishable.
