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\begin{document}

\begin{center}
\includegraphics[width=0.5in]{../ltr-logo.jpg}
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\noindent{\Large{\textsc{Intro to Abstract Mathematics\hfill Assignment 7.1  \\ Spring 2020 \hfill Due March 18}}}

\large

\vspace{1cm}


\begin{exercise}
Prove that every odd integer has the form $4k \pm 1$ for some $k \in \Z$.
\end{exercise}

\begin{exercise}  
Prove that there is a $y \in \R$ so that $\frac{x+2}{3x+4} = y$ has no real solutions.
\end{exercise}

\begin{exercise}
Textbook exercise 3.3.19.
\end{exercise}

\begin{exercise}
Textbook exercise 3.3.21.
\end{exercise}


\end{document}
