Suggested edit: https://math.stackexchange.com/review/suggested-edits/1113380
Answer: Volume of a solid with base of circular disk, parallel crosssections perpendicular to base are squares.
I found the above linked answer a couple days ago, and thought it was helpful, so I upvoted. However, I noticed that it seemed to be rendering incorrectly, with the dx
before the actual function:
(I did upvote; the screenshot is from an incognito window so no extensions are active)
So I suggested the linked edit, putting the dx
after the integral content. However, it was rejected as superfluous, which I don't really understand. At least in Chrome 70, it doesn't look correct, and confused me when I first read it. As it is, it's not taking the integral of A(x)
, but rather of just 1
.
I have to admit that I'm not an expert in mathematical notation, however, I didn't find anything about this on this meta, or any other posts that put dx
before the integrated function.
What did I do wrong?
EDIT:
Thanks for the responses. I never knew that dx
could go before the integrand. But from the posts Florian linked, and from what Florian said, it seems like doing that is better for nested integrals or more complex integrals, where it needs to be easier to separate the components.
Since this is a pretty basic integral, and it's probably something students will run into a lot, and since it seems like students are taught with dx
going after the integrand more, I'm starting to think that it does improve readability, even if it's currently correct notation.
I could accept a "goes against the author's intent" rejection, but now the "does not improve readability" rejection makes less sense to me.
$\displaystyle \frac{dx}{dy} + y = 17$
, to read$$\frac {dx}{dy} + y = 17$$
and makes no other changes than one such as that. Suggested edits need to be offered in the spirit of really improving a post. Of course, the cut off line for "what really improves a post" is going to vary from person to person, to some degree. $\endgroup$