Не знала куда разместить. Модераторы, если что, перенесут.
Сегодня на мейл пришло такое письмо
	Цитата:
	
	
		
			
				These items are available as free downloads: 
 
ELEMENTARY DIFFERENTIAL EQUATIONS 
http://ramanujan.math.trinity.edu/wt...E_DIFFEQ_I.PDF, previously published by  Brooks/Cole  Thomson Learning, 2000. 
 
ELEMENTARY DIFFERENTIAL EQUATIONS WITH BOUNDARY VALUE PROBLEMS, 
http://ramanujan.math.trinity.edu/wt..._DIFFEQ_II.PDF, previously published by  Brooks/Cole  Thomson Learning, 2000. 
 
STUDENT SOLUTIONS MANUAL FOR ELEMENTARY DIFFERENTIAL EQUATIONS 
AND ELEMENTARY DIFFERENTIAL EQUATIONS WITH BOUNDARY VALUE PROBLEMS, 
ramanujan.math.trinity.edu/wtrench/texts/TRENCH_DE_STUDENT_MANUAL.PDF previously published by Brooks/Cole Thomson Learning, 2000. 
 
 
INTRODUCTION TO REAL ANALYSIS 
http://ramanujan.math.trinity.edu/wt...L_ANALYSIS.PDF, previously published by Pearson Education, 2003. 
 
 
Supplements to INTRODUCTION TO REAL ANALYSIS: 
FUNCTIONS DEFINED BY IMPROPER INTEGRALS 
http://ramanujan.math.trinity.edu/wt..._FUNCTIONS.PDF, previously published by Harper & Row, 1978. 
 
THE METHOD OF LAGRANGE MULTIPLIERS, 
http://ramanujan.math.trinity.edu/wt...NGE_METHOD.PDF, previously published by Harper & Row, 1978. 
 
Instructor solutions manuals are available on request, subject to verification 
of faculty status. I would appreciate it if you would pass this along to colleagues and students who may be interested. 
 
 
William F. Trench 
Andrew G. Cowles Distinguished Professor Emeritus 
Mathematics Department 
Trinity University 
San Antonio, Texas, USA
			
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 В общем, можно скачать бесплатно книги по диф. уравнениям, анализу и т.п. 
Страница Автора. Там выложены книги и информация об авторе
Возможно кому-то пригодится. Сама я не читала, про качество ничего не скажу.