Quote:
Originally Posted by geekoftheweek
This approach confuses my understanding of the problem. Why doesn't the symmetry of the problem reduce it to 1D (r instead of x) with two parameters, i.e. the "positive intervals" case in example 2.2.2?
Thanks

Sounds logical...the linear scale representing radius can range from 0 (center of the concentric circles) to infinity with positive interval ab contained within.