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Changing $dx$ to $\operatorname d\!x$
Accepted answer
52 votes

From typographical point of view, the question whether d in dx is upright or italic is not clear at all, it varies from author to author, from sub-field to sub-field and from journal to journal. ...

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Net gain for a poor question
-3 votes

Well, just simply don't downvote below -1. It doesn't help anything and anyone: either the question is impossible to improve: then simply close it or it's only somehow bad and can be improved: simply ...

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