Setting new command in LaTeX for the differential

Question

I am writing a document in LaTeX and since I use quite often the command ${\rm d}$ for inserting the differential in the integrals , I decided to make a new command and insert in the preamble.

I wrote it as: \newcommand{\d}{d} but it does not compile. It say "your command has been ignored. What am I doing wrong here? How can I insert the command to work properly ?

Related: http://tex.stackexchange.com/q/14821/14757 or http://tex.stackexchange.com/q/178946/14757 or search for differential here in TEX.SE. — Sigur, May 10 '15 at 11:50
Please have a look at packages like physics or skamth or ... — Johannes_B, May 10 '15 at 11:50
you probably got the error ! LaTeX Error: Command \d already defined. \d is one of the "predefined" accent commands. it's not a good idea to try to redefine it. — barbara beeton, May 10 '15 at 12:11
@barbarabeeton I did not know that. Anyway, thanks for the links. I'll check them out. It is that I do not use commands that often, expect for defing new theorems of new definitions or lemmas etc. — Tolaso, May 10 '15 at 12:17

Mico · Accepted Answer · 2015-05-10T14:30:33.997

2

May I suggest

\newcommand{\dee}{\mathop{\mathrm{d}\!}}

to be used as follows:

\int_0^1 x\dee x = \frac{1}{2}

edited May 10 '15 at 14:30

answered May 10 '15 at 12:17

Mico

506,678

It is a good command. Also the links given above helped me declare a new command. Thank you! – Tolaso May 10 '15 at 12:19
2

@Tolaso No, it isn't good. Try $\frac{\dee y}{\dee x}$ to know why. – egreg May 10 '15 at 12:28
@Tolaso - I've posted an improved version of the \dee macro, which should pass egreg's muster. :-) – Mico May 10 '15 at 14:31
@egreg Ohh... I did not try that. Thanks for the observation. – Tolaso May 10 '15 at 19:07

Setting new command in LaTeX for the differential

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