Some classes of differential equations that are convertible to homogenous equation

As known, differential equations has great importance in education of physics, chemistry and, engineering along it's great importance in education of mathematics. Also, when the insolvability of differential equations with exact methods in most situations is taken into account, it can be said that, the enlargement of the class of differential equations which can be solved by exact methods is one of the current problems of mathematics education and, applied mathematics. This article is devoted to, two types of first-order differential equations, which can be converted to homogeneous equations with replacement depending on the situation are examined. (C) 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of Prof. Dr. Huseyin Uzunboylu