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%\documentclass[a4paper,twocolumn]{article}
%\documentclass[a4paper]{article}
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%page
\textwidth 17.5cm \columnwidth 8cm  \textheight 25.7cm%26.7cm
\oddsidemargin -1cm \evensidemargin -1cm \topmargin -60pt%-70pt





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\begin{document}
%

%
\centerline{\bf 21. Определен интеграл. Дефиниция и свойства. Интегруемост на}
 \centerline{ \bf непрекъснатите функции. Теорема на Нютон - Лайбниц.}
%\author{}
%\date{}

%\pagestyle{empty}
%\small
%\maketitle
%между двата надписа пиши каквото трябва%
%\centerline{\bf Изпит по МА-2, поправка(теория)}
%\centerline{\bf специалности "Физика" и "ККТФ"}
%\centerline{\bf 1-ви курс, редовно обучение}
%\centerline{\bf 02.09.2012 година}\vspace{0.6cm}

%{\large\bf Име:} \hspace{9cm}{\large\bf фак. номер:}


\vskip 1.5 cm




\centerline{\bf 1.Определени интеграли - дефиниция и свойства.}
\input rint


\centerline{\bf 2.Свойства на определените интеграли.}
\input rswo


\centerline{\bf 3. Пресмятане на определените интеграли.}
\input rizint







%между двата надписа пиши каквото трябва
\end{document}
