first.tex

\documentclass{ximera}

\title{This is a TEST by Prof. Choi!}
\author{Youngjun Choi, Ph.D.}

\begin{document}
\begin{abstract}
  This is a place to get started.
\end{abstract}
\maketitle
March 30, 2021\\[0.1in]
Here's a sample question.  I can math like $2x^3 = 10$.

\begin{problem}
  What do you think the answer is?

  \begin{multipleChoice}
    \choice{Incorrect}
    \choice{Not this one!}
    \choice[correct]{Click here?}
    \choice{Not me!}
  \end{multipleChoice}
\end{problem}

\begin{problem}
  \begin{multipleChoice}
    \choice[correct]{YES!}
    \choice{No, no no.}
  \end{multipleChoice}
\end{problem}

\begin{problem}
  You can test that $x + x = \answer{2x}$
  or that $x \cdot x = \answer{x^2}$.

  I can do calculations like 
  \[
    \sqrt{\answer{4}} = 2
  \]
  and
  \[
    \frac{\answer{1}}{2} = 0.5
  \]
\end{problem}

\begin{problem}
  Set up the definite integral
    \[
      \int_{\answer{0}}^{\answer{1}} f(x) \, dx
    \]
  to evaluate from $0$ to $1$.

  \begin{question}
    What if $f(x) = \sin x$?  Then,
    \[
       \int_0^1 \sin x \, dx = \answer{-\cos(1) + \cos(0)}.
    \]

    \begin{hint}
      Recall $\int \sin x \, dx = -\cos x + C$.
    \end{hint}
  \end{question}
\end{problem}

\begin{problem}
   The tolerance 17 means $3421 \approx \answer[tolerance=17]{3421}$
\end{problem}

\end{document}