2

I am still relatively new to TeX. Thank you in advance for your patience with me. I assure you I have looked around for more than just 5 minutes before asking this question.

I am able to create a piecewise function using the following:

\documentclass{exam}
\begin{document}
\begin{questions}
....
\question %7
Let \begin{equation*}
    f(x) = \begin{cases}
          x, & x < 3,\\
          4x, &  x > 3
          \end{cases}
\end{equation*}
be a function.  Which of the following statements is/are true about $f$?
...
\end{questions}
\end{document}

However, the piecewise function is centered awkwardly on its own line when really I just want it inline with the rest of the sentence.

In other words, the above gets me

"Let

(centered) f(x)= look-at-all-my-pieces

be a function..."

and I would like it to be "Let f(x)= look-at-all-my-pieces be a function..."

I can do this with a non-piecewise function by simply using $f(x)=function-stuff$ but I am unable to do this once I have cases.

1

Here are three ways:

\documentclass{exam}

\usepackage{amsmath}

\begin{document}

\begin{questions}

  \question
  Let $ f(x) = \begin{cases}
      x & \text{if }x < 3 \\
      4x & \text{if }x > 3
    \end{cases}\, $
  be a function. Which of the following statements is/are true about $f$?

  \question
  Let $ f(x) =\left\{ \begin{matrix}
      x & \text{if }x < 3 \\
      4x & \text{if }x > 3
    \end{matrix}\right.\, $
  be a function. Which of the following statements is/are true about $f$?
  \question
  Let $ f(x) = x$ if $ x < 3 $, $f(x) = 4x $ if $ x > 3 $, be a function. Which of the following statements is/are true about $f$?
\end{questions}

\end{document} 

enter image description here

  • shouldn't f be inside the math $ expression? – barbara beeton Jul 28 '17 at 0:17
  • Probably. I guess my mouse slipped while I was asleep. I'll fix that in a while. Thanks for pointing it! – Bernard Jul 28 '17 at 0:21

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