Examples of Differential Equations: With Rules for Their Solution. E-book. Formato PDF George Abbott Osborne   -  Forgotten Books, 2017  - 

Many of the examples have been collected from standard treatises, but a considerable number have been prepared by the author to illustrate Special difficulties, or to pro vide exercises corresponding more nearly with the abilities of average students. With few exceptions they have all been tested by use in the class-room.