تقدير الخطأ فى الطرق التقريبية لحل المعادلات التفاضلية غير الخطية من الدرجة الثانية

Abstract

The thesis dealt with error estimates of approximate solutions in analytical for, thereby providing a measures of acceptences and effectiveness of the approximate method used. In general a differential equation is an equaltion containing derivatives. Any non-derivative relation between the variables of a differential equation which satistifies the equation is a solution of it.