Dear Fellow Maplers,

I am seeing some puzzling inconsistencies in Maple's numerical integration routines, and am reaching out to the Maple community to see if someone out there can help shed some light on what the source of problem might be. 

To illustrate the problem I have constructed a minimal anomalous example.  Consider the following function of two variables:

      g := (1-x) * ln(sqrt(x^2 + y^2 + 1) +1 );