I am trying to write something similar to $\frac{a}{b} more words$ but using over (manim requires that it must be with over) but when writing $a\over b more words$ the "more words" appear in the denominator.
How can this issue be solved?
1 Answer
Well the solution is simply using { } brackets like so: {a \over b} some words
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5That is actually not sufficient in the general case. When using
\overyou should always write{{a} \over {b}}.Henri Menke– Henri Menke2020-07-09 20:33:00 +00:00Commented Jul 9, 2020 at 20:33 -
2@HenriMenke Under what circumstances do you need those extra braces? I'm unaware of any case where they're necessary.Don Hosek– Don Hosek2021-10-26 03:48:16 +00:00Commented Oct 26, 2021 at 3:48
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@DonHosek The
\fracmacro adds\begingroupand\endgrouparound the first argument, because local assignments in it might spill to the denominator.egreg– egreg2021-10-26 08:27:31 +00:00Commented Oct 26, 2021 at 8:27 -
@DonHosek Example:
$a\let\x\relax\over b\show\x$. Without the grouping, something like\frac{\bf a}{b}would have both letters in boldface. Now\bfis deprecated, I know, but that's the rationale for adding the group.egreg– egreg2021-10-26 10:17:35 +00:00Commented Oct 26, 2021 at 10:17 -
1That seems a bit questionable—both the use case and the effect. It carries with it an implication that in general for a command with two arguments that an assignment in the first argument would not be carried over to the second argument which is not going to be true in general. And to consider this a common enough situation that one should always write
{{a}\over{b}}seems dubious.Don Hosek– Don Hosek2021-10-26 21:50:21 +00:00Commented Oct 26, 2021 at 21:50
\fracnot\over: why must you use the latter?