ABSTRACT
It is natural to feel that a differential equation should be solved, and one of the main aims of our work in Chapter 3 was to develop ways of finding explicit solutions of the second order linear equation () y ″ + P ( x ) y ′ + Q ( x ) y = 0. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315371825/895247ed-bf4c-467d-b370-ced59759b8c3/content/eq775.tif"/>
