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diff --git a/Master/texmf-dist/doc/latex/exsol/example-exercisebook.pdf b/Master/texmf-dist/doc/latex/exsol/example-exercisebook.pdf Binary files differnew file mode 100644 index 00000000000..e332ad06a3a --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-exercisebook.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-exercisebook.tex b/Master/texmf-dist/doc/latex/exsol/example-exercisebook.tex new file mode 100644 index 00000000000..8f32d4a42a4 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-exercisebook.tex @@ -0,0 +1,44 @@ +%% +%% This is file `example-exercisebook.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `exampleexc') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[english]{babel} +\usepackage{exsol} + +\setlength{\parindent}{0em} + +\title{Exercise book, specified in the example-external of the + \textsf{ExSol} package} +\author{Walter Daems} + +\begin{document} + +\maketitle + +\input{example-external.exc.tex} + +\end{document} +\endinput +%% +%% End of file `example-exercisebook.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example-external.pdf b/Master/texmf-dist/doc/latex/exsol/example-external.pdf Binary files differnew file mode 100644 index 00000000000..767df3f446d --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-external.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-external.tex b/Master/texmf-dist/doc/latex/exsol/example-external.tex new file mode 100644 index 00000000000..9c02c7a79aa --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-external.tex @@ -0,0 +1,124 @@ +%% +%% This is file `example-external.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `example-external') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[english]{babel} +\usepackage[external]{exsol} + +\title{External example, from the \textsf{ExSol} package} +\author{Walter Daems} +\setlength{\parindent}{0em} +\begin{document} +\maketitle + +\section{Introduction} + +In this text we explain how to solve second-order polynomial +equations. + +\section{Solving second-order polynomial equations} + +\begin{informulacollectiononly} +\section*{Solving second-order polynomial equations} +\end{informulacollectiononly} +\begin{informulacollection} + The roots of the following equation + \begin{equation} + a x^2 + bx + c = 0 + \end{equation} + can be determined as: + \begin{equation} + x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} + \end{equation} +\end{informulacollection} + +\begin{exercises}[columns = 2] + + \begin{exercise} + Solve the following equation for $x \in C$, with $C$ the set of + complex numbers: + \begin{equation} + 5 x^2 -3 x = 5 + \end{equation} + \end{exercise} + \begin{solution} + Let's start by rearranging the equation, a bit: + \begin{eqnarray} + 5.7 x^2 - 3.1 x &=& 5.3\\ + 5.7 x^2 - 3.1 x -5.3 &=& 0 + \end{eqnarray} + The equation is now in the standard form: + \begin{equation} + a x^2 + b x + c = 0 + \end{equation} + For quadratic equations in the standard form, we know that two + solutions exist: + \begin{equation} + x_{1,2} = \frac{ -b \pm \sqrt{d}}{2a} + \end{equation} + with + \begin{equation} + d = b^2 - 4 a c + \end{equation} + If we apply this to our case, we obtain: + \begin{equation} + d = (-3.1)^2 - 4 \cdot 5.7 \cdot (-5.3) = 130.45 + \end{equation} + and + \begin{eqnarray} + x_1 &=& \frac{3.1 + \sqrt{130.45}}{11.4} = 1.27\\ + x_2 &=& \frac{3.1 - \sqrt{130.45}}{11.4} = -0.73 + \end{eqnarray} + The proposed values $x = x_1, x_2$ are solutions to the given equation. + \end{solution} + \begin{exercise} + Consider a 2-dimensional vector space equipped with a Euclidean + distance function. Given a right-angled triangle, with the sides + $A$ and $B$ adjacent to the right angle having lengths, $3$ and + $4$, calculate the length of the hypotenuse, labeled $C$. + \end{exercise} + \begin{solution} + This calls for application of Pythagoras' theorem, which + tells us: + \begin{equation} + \left\|A\right\|^2 + \left\|B\right\|^2 = \left\|C\right\|^2 + \end{equation} + and therefore: + \begin{eqnarray} + \left\|C\right\| + &=& \sqrt{\left\|A\right\|^2 + \left\|B\right\|^2}\\ + &=& \sqrt{3^2 + 4^2}\\ + &=& \sqrt{25} = 5 + \end{eqnarray} + Therefore, the length of the hypotenuse equals $5$. + \end{solution} +\end{exercises} +And now, we can come to conclusion. + +\section{Conclusion} +Solving second-order polynomial equations is very easy. +\end{document} +\endinput +%% +%% End of file `example-external.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example-formulacollection.pdf b/Master/texmf-dist/doc/latex/exsol/example-formulacollection.pdf Binary files differindex 75730d35d56..965a4e2b3f2 100644 --- a/Master/texmf-dist/doc/latex/exsol/example-formulacollection.pdf +++ b/Master/texmf-dist/doc/latex/exsol/example-formulacollection.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-formulacollection.tex b/Master/texmf-dist/doc/latex/exsol/example-formulacollection.tex new file mode 100644 index 00000000000..107c6f6b40a --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-formulacollection.tex @@ -0,0 +1,44 @@ +%% +%% This is file `example-formulacollection.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `examplefor') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[english]{babel} +\usepackage{exsol} + +\setlength{\parindent}{0em} + +\title{Formula collection, specified in the example of the + \textsf{ExSol} package} +\author{Walter Daems} + +\begin{document} + +\maketitle + +\input{example.fc.tex} + +\end{document} +\endinput +%% +%% End of file `example-formulacollection.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example-inline.pdf b/Master/texmf-dist/doc/latex/exsol/example-inline.pdf Binary files differnew file mode 100644 index 00000000000..1ea5fda2cb8 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-inline.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-inline.tex b/Master/texmf-dist/doc/latex/exsol/example-inline.tex new file mode 100644 index 00000000000..d6f4951ce26 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-inline.tex @@ -0,0 +1,108 @@ +%% +%% This is file `example-inline.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `example-inline') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[11pt,a4paper]{article} + +\usepackage[german]{babel} +\usepackage[inline,usesolutionserieslabels]{exsol} +\usepackage{enumitem} + +\setlength{\exsolexercisetopbottomsep}{0pt plus 0pt minus 1pt} +\setlength{\exsolexerciseleftmargin}{2em} +\setlength{\exsolexerciserightmargin}{1em} +\setlength{\exsolexerciseparindent}{0em} +\setlength{\exsolexerciselabelsep}{1ex} +\setlength{\exsolexerciselabelwidth}{30pt} +\setlength{\exsolexerciseitemindent}{0pt} +\setlength{\exsolexerciseparsep}{\parskip} + +\title{Local inline example, from the \textsf{ExSol} package} +\author{Philippe Marti} +\setlength{\parindent}{0em} +\begin{document} +\maketitle + +\section{Gleichungssysteme und Geraden} + +Ein bisschen Theorie\ldots + +\begin{exerciseseries}[solsubrule=\hrule]{Gleichungssysteme} + \begin{exercise} + Die Summe zweier Zahlen ist 17 und ihre Differenz 7. Bestimme die + beiden Zahlen! + \end{exercise} + \begin{solution} + 5 und 12 + \end{solution} + + \begin{exercise} + Die Differenz einer Zahl und dem Dreifachen einer zweiten Zahl ist + 14. Bestimme die beiden Zahlen, falls die zweite Zahl ein Zehntel + der ersten ist. + \end{exercise} + \begin{solution} + 20 und 2 + \end{solution} +\end{exerciseseries} +~\\ +Etwas mehr Theorie\ldots + +\begin{exerciseseries}{Geraden} + \begin{exercise} + Berechne den Schnittpunkt von \mbox{$y=3x+1$} und \mbox{$y=3x-7$}. + \end{exercise} + \begin{solution} + Es gibt keinen Schnittpunkt + \end{solution} + + \begin{exercise} + Die Familie Meier fordert Offerten f\"ur eine Heizungsreparatur + ein. Firma A berechnet f\"ur die Fahrtkosten Fr. 42.- und f\"ur + jede Arbeitsstunde 76.-. Bei der Firma B sind die Fahrtkosten + Fr. 35.- und jede Arbeitsstunde wird mit Fr. 80.- berechnet. + \begin{enumerate}[label=\alph*)] + \item Welche Kosten entstehen f\"ur beide Firmen, wenn ein Monteur + 3.5 Stunden + f\"ur die Arbeit benötigt? Welche Firma ist in diesem Fall + kostengünstiger? + + \item Wie lauten die Gleichungen derjenigen zwei linearen + Funktionen, die jeder Arbeitszeit $x$ (in Stunden) die + entstehenden Kosten $y$ (in Franken) zuordnet? + + \item Berechne, bei welcher Arbeitszeit die Kosten bei beiden + Firmen gleich sind. + \end{enumerate} + \end{exercise} + \begin{solution} + \begin{enumerate}[label=\alph*)] + \item Firma A: 308.- $|$ Firma B: 315.- + \item A: $y=76x+42$ $|$ B: $y=80x+35$ + \item Bei $1\frac{3}{4}$ Stunden + \end{enumerate} + \end{solution} +\end{exerciseseries} + +\end{document} +\endinput +%% +%% End of file `example-inline.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example-local.pdf b/Master/texmf-dist/doc/latex/exsol/example-local.pdf Binary files differindex ddb51bed263..009b07f672b 100644 --- a/Master/texmf-dist/doc/latex/exsol/example-local.pdf +++ b/Master/texmf-dist/doc/latex/exsol/example-local.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-local.tex b/Master/texmf-dist/doc/latex/exsol/example-local.tex new file mode 100644 index 00000000000..408e8a5b455 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-local.tex @@ -0,0 +1,110 @@ +%% +%% This is file `example-local.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `example-local') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[german]{babel} +\usepackage[local,nolabels,exerciseaslist,usesolutionserieslabels]{exsol} +\usepackage{enumitem} + +\setlength{\exsolexercisetopbottomsep}{0pt plus 0pt minus 1pt} +\setlength{\exsolexerciseleftmargin}{2em} +\setlength{\exsolexerciserightmargin}{1em} +\setlength{\exsolexerciseparindent}{0em} +\setlength{\exsolexerciselabelsep}{1ex} +\setlength{\exsolexerciselabelwidth}{30pt} +\setlength{\exsolexerciseitemindent}{0pt} +\setlength{\exsolexerciseparsep}{\parskip} + +\title{Local example, from the \textsf{ExSol} package} +\author{Philippe Marti} +\setlength{\parindent}{0em} +\begin{document} +\maketitle + +\section{\exercisesname} + +\begin{exerciseseries}[columns=2,solsubrule=\hrule]{Gleichungen $|$ Gleichungssysteme} + + \begin{exercise} + Die Summe zweier Zahlen ist 17 und ihre Differenz 7. Bestimme die + beiden Zahlen! + \end{exercise} + \begin{solution} + 5 und 12 + \end{solution} + + \begin{exercise} + Die Differenz einer Zahl und dem Dreifachen einer zweiten Zahl ist + 14. Bestimme die beiden Zahlen, falls die zweite Zahl ein Zehntel + der ersten ist. + \end{exercise} + \begin{solution} + 20 und 2 + \end{solution} + +\end{exerciseseries} + +\begin{exerciseseries}[columns=2]{Geraden} + \begin{exercise} + Berechne den Schnittpunkt von \mbox{$y=3x+1$} und \mbox{$y=3x-7$}. + \end{exercise} + \begin{solution} + Es gibt keinen Schnittpunkt + \end{solution} + + \begin{exercise} + Die Familie Meier fordert Offerten f\"ur eine Heizungsreparatur + ein. Firma A berechnet f\"ur die Fahrtkosten Fr. 42.- und f\"ur + jede Arbeitsstunde 76.-. Bei der Firma B sind die Fahrtkosten + Fr. 35.- und jede Arbeitsstunde wird mit Fr. 80.- berechnet. + \begin{enumerate}[label=\alph*)] + \item Welche Kosten entstehen f\"ur beide Firmen, wenn ein Monteur + 3.5 Stunden + f\"ur die Arbeit benötigt? Welche Firma ist in diesem Fall + kostengünstiger? + + \item Wie lauten die Gleichungen derjenigen zwei linearen + Funktionen, die jeder Arbeitszeit $x$ (in Stunden) die + entstehenden Kosten $y$ (in Franken) zuordnet? + + \item Berechne, bei welcher Arbeitszeit die Kosten bei beiden + Firmen gleich sind. + \end{enumerate} + \end{exercise} + \begin{solution} + \begin{enumerate}[label=\alph*)] + \item Firma A: 308.- $|$ Firma B: 315.- + \item A: $y=76x+42$ $|$ B: $y=80x+35$ + \item Bei $1\frac{3}{4}$ Stunden + \end{enumerate} + \end{solution} +\end{exerciseseries} + +\section{\solutionsname} +\loadSolutions + +\end{document} +\endinput +%% +%% End of file `example-local.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example-solutionbook.pdf b/Master/texmf-dist/doc/latex/exsol/example-solutionbook.pdf Binary files differindex 58e8f1172de..6b4758989a4 100644 --- a/Master/texmf-dist/doc/latex/exsol/example-solutionbook.pdf +++ b/Master/texmf-dist/doc/latex/exsol/example-solutionbook.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example-solutionbook.tex b/Master/texmf-dist/doc/latex/exsol/example-solutionbook.tex new file mode 100644 index 00000000000..20be3a433f6 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example-solutionbook.tex @@ -0,0 +1,44 @@ +%% +%% This is file `example-solutionbook.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `examplesol') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[english]{babel} +\usepackage{exsol} + +\setlength{\parindent}{0em} + +\title{Solutions to the exercises, specified in the example of the + \textsf{ExSol} package} +\author{Walter Daems} + +\begin{document} + +\maketitle + +\input{example.sol.tex} + +\end{document} +\endinput +%% +%% End of file `example-solutionbook.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/example.pdf b/Master/texmf-dist/doc/latex/exsol/example.pdf Binary files differindex c19b69c8484..47225cc0b25 100644 --- a/Master/texmf-dist/doc/latex/exsol/example.pdf +++ b/Master/texmf-dist/doc/latex/exsol/example.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/example.tex b/Master/texmf-dist/doc/latex/exsol/example.tex new file mode 100644 index 00000000000..6766f2fe65f --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/example.tex @@ -0,0 +1,129 @@ +%% +%% This is file `example.tex', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% exsol.dtx (with options: `example') +%% +%% This is a generated file. +%% +%% Copyright (C) 2019 by Walter Daems <walter.daems@uantwerpen.org> +%% +%% This file may be distributed and/or modified under the conditions of +%% the LaTeX Project Public License, either version 1.3 of this license +%% or (at your option) any later version. The latest version of this +%% license is in: +%% +%% http://www.latex-project.org/lppl.txt +%% +%% and version 1.3 or later is part of all distributions of LaTeX version +%% 2005/12/01 or later. +%% +\documentclass[a4paper,10pt]{article} + +\usepackage{a4wide} +\usepackage[english]{babel} +\usepackage[copyexercisesinsolutions]{exsol} + +\title{Gobal example, from the \textsf{ExSol} package} +\author{Walter Daems} +\setlength{\parindent}{0em} +\begin{document} +\maketitle + +\section{Introduction} + +In this text we explain how to solve second-order polynomial +equations. + +\section{Solving second-order polynomial equations} + +\begin{informulacollectiononly} +\section*{Solving second-order polynomial equations} +\end{informulacollectiononly} +\begin{informulacollection} + The roots of the following equation + \begin{equation} + a x^2 + bx + c = 0 + \end{equation} + can be determined as: + \begin{equation} + x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} + \end{equation} +\end{informulacollection} + +To make sure you master calculating the roots of second-order +equation, please solve exercise \ref{ex:1}. + +\begin{exercises}[columns = 2] + + \begin{exercise} + \label{ex:1} + Solve the following equation for $x \in C$, with $C$ the set of + complex numbers: + \begin{equation} + 5 x^2 -3 x = 5 + \end{equation} + \end{exercise} + \begin{solution} + Let's start by rearranging the equation, a bit: + \begin{eqnarray} + 5.7 x^2 - 3.1 x &=& 5.3\\ + 5.7 x^2 - 3.1 x -5.3 &=& 0 + \end{eqnarray} + The equation is now in the standard form: + \begin{equation} + a x^2 + b x + c = 0 + \end{equation} + For quadratic equations in the standard form, we know that two + solutions exist: + \begin{equation} + x_{1,2} = \frac{ -b \pm \sqrt{d}}{2a} + \end{equation} + with + \begin{equation} + d = b^2 - 4 a c + \end{equation} + If we apply this to our case, we obtain: + \begin{equation} + d = (-3.1)^2 - 4 \cdot 5.7 \cdot (-5.3) = 130.45 + \end{equation} + and + \begin{eqnarray} + x_1 &=& \frac{3.1 + \sqrt{130.45}}{11.4} = 1.27\\ + x_2 &=& \frac{3.1 - \sqrt{130.45}}{11.4} = -0.73 + \end{eqnarray} + The proposed values $x = x_1, x_2$ are solutions to the given equation. + \end{solution} + \begin{exercise} + \label{ex:2} + Consider a 2-dimensional vector space equipped with a Euclidean + distance function. Given a right-angled triangle, with the sides + $A$ and $B$ adjacent to the right angle having lengths, $3$ and + $4$, calculate the length of the hypotenuse, labeled $C$. + \end{exercise} + \begin{solution} + This calls for application of Pythagoras' theorem, which + tells us: + \begin{equation} + \left\|A\right\|^2 + \left\|B\right\|^2 = \left\|C\right\|^2 + \end{equation} + and therefore: + \begin{eqnarray} + \left\|C\right\| + &=& \sqrt{\left\|A\right\|^2 + \left\|B\right\|^2}\\ + &=& \sqrt{3^2 + 4^2}\\ + &=& \sqrt{25} = 5 + \end{eqnarray} + Therefore, the length of the hypotenuse equals $5$. + \end{solution} +\end{exercises} + +And now, we can come to the conclusion. +\section{Conclusion} +Solving second-order polynomial equations is very easy. +\end{document} +\endinput +%% +%% End of file `example.tex'. diff --git a/Master/texmf-dist/doc/latex/exsol/exsol.pdf b/Master/texmf-dist/doc/latex/exsol/exsol.pdf Binary files differindex 0fd252d1177..db7e94c5465 100644 --- a/Master/texmf-dist/doc/latex/exsol/exsol.pdf +++ b/Master/texmf-dist/doc/latex/exsol/exsol.pdf diff --git a/Master/texmf-dist/doc/latex/exsol/manifest.txt b/Master/texmf-dist/doc/latex/exsol/manifest.txt new file mode 100644 index 00000000000..dd199abe582 --- /dev/null +++ b/Master/texmf-dist/doc/latex/exsol/manifest.txt @@ -0,0 +1,16 @@ +[ 4096] . +[ 1644] README +[ 443] manifest.txt +[ 403] LICENSE +[ 227438] exsol.pdf +[ 2547] exsol.ins +[ 59594] exsol.dtx +[ 69744] example-solutionbook.pdf +[ 61820] example.pdf +[ 55624] example-local.pdf +[ 56960] example-inline.pdf +[ 55413] example-formulacollection.pdf +[ 58600] example-external.pdf +[ 48449] example-exercisebook.pdf + +1 directory, 13 files |