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What’s the proper way to typeset a differential operator?


That is my new comamnd for writing the dx of an intergral. Just wanted to be able to type this in my code.

\d{x}  <<<where the x is the variable of integration>>>

What did I do wrong?

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marked as duplicate by Claudio Fiandrino, Thorsten, Andrew Swann, Stephen, Martin Schröder Dec 18 '12 at 18:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Related Question: Should I \mathrm the d in my integrals? – Peter Grill Nov 17 '12 at 7:56

1 Answer 1

up vote 10 down vote accepted
\renewcommand\d[1]{\:\textrm{d}#1} % if \d is already defined

only for a definition of an environment you use \newenvironment{env}. Another useful definition is:


in your definition you do not really need the argument and using \mathrm makes more sense, then it takes the d from the same math font and not from the text font

$\d x \textrm{ or } \diff x  $
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Ok. uh. so what do I type in the body? – MaoYiyi Nov 17 '12 at 7:49
\d{x} or \d x or \diff x – Herbert Nov 17 '12 at 7:52
@MaoYiyi: You should not use \d as that is already used elsewhere. – Peter Grill Nov 17 '12 at 7:53
@MaoYiyi: "that didn't work" is not a helpful message ... As Peter already mentioned, if the \d is already defined (for an accent), then use \renewcommand\d – Herbert Nov 17 '12 at 7:59
@MaoYiyi: sure makes no difference – Herbert Nov 17 '12 at 8:17

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