Exam Class: Make math expressions in \correctchoice bold

Question

I'm using the exam package to create a mathematics question paper. When printing answers, the \correctchoice command makes the choice letter as well as the text in the choice bold. However, it does not make any mathematic expressions bold.

Is there a way to add this to the document? I think the commands \boldmath and \unboldmath when put around the text will make both normal text and mathematic expressions bold, but I do not know how to "merge" it with the \correctchoice command.

score 8 · Answer 1 · edited Mar 24 '17 at 11:07

8

You already seem to have answers that will work, but the exam class provides a hook for customizing the correct choices. If you give the command:

\CorrectChoiceEmphasis{\bfseries\boldmath}

then you'll get what you want. The default behavior was created with the command here:

\CorrectChoiceEmphasis{\bfseries}

edited Mar 24 '17 at 11:07

Bobyandbob

4,899

answered Jun 17 '13 at 04:06

Phil Hirschhorn

8,942

If I can believe my eyes, this is a much better solution than mine -- I didn't see anything like this in the manual XD – Sean Allred Jun 17 '13 at 04:27
1

@SeanAllred: It's in section 5.6 (Customizations) of examdoc.pdf. Section 5 discusses multiple choice questions. – Phil Hirschhorn Jun 17 '13 at 04:33

score 7 · Accepted Answer · edited Apr 13 '17 at 12:35

7

The best solution would be to use \correctchoice as a hook and tack \boldmath and \unboldmath onto it that way using a formula of \edef and \expandafters that I've yet to grasp/memorize. See How to add a hook to a macro.

In absence of hooking, I would say

\renewcommand{\choiceshook}{%
  \ifprintanswers
    \let\oldchoice\choice
    \let\oldcorrectchoice\correctchoice
    \def\choice{\unboldmath\oldchoice}
    \def\correctchoice{\oldcorrectchoice\boldmath}
  \fi}

\noprintanswers:
enter image description here

\printanswers:
enter image description here

edited Apr 13 '17 at 12:35

Community

1

answered Jun 12 '13 at 11:30

Sean Allred

27,421

This works brilliantly. No need for a new command either. Thanks! – Milind Hegde Jun 12 '13 at 11:42

score 0 · Answer 3 · edited Apr 13 '17 at 12:36

0

Reading the answers to this question I was able to do it.

Adding

\newcommand{\MyCorrectChoice}[1]{%
   \ifprintanswers
      \CorrectChoice \boldmath#1\unboldmath%
   \else
      \CorrectChoice #1%
   \fi
}

to the preamble fixed my problem.

edited Apr 13 '17 at 12:36

Community

1

answered Jun 12 '13 at 11:28

Milind Hegde

217

What's with the optional argument? – Sean Allred Jun 12 '13 at 11:35
You're right, there's no need. I tried to change as little as I could of the answer from that question. I'll edit my answer now. – Milind Hegde Jun 12 '13 at 11:38

Exam Class: Make math expressions in \correctchoice bold

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