Talk:Derivative

message: After the definition is given, indications on how to read are given. They include 
"dy by dx at a", or "dy over dx at a"
should it be 
"df by dx at a", or "df over dx at a"
since "y" is not use in the section ?  Padelsart (talk) 13:02, 1 February 2023 (UTC)
replies: text: Chaged dy to f, and reworded a bit. Whether or not there are people who say "dy by dx" in this context, it is a confusing thing to include right after the definition, and should be kept to the notation section. small jars tc 18:01, 1 February 2023 (UTC)
thread_title:  Definition section : "df" instead of "dy" ? 

message: I think the formula from Stegun (https://personal.math.ubc.ca/~cbm/aands/abramowitz_and_stegun.pdf, page 824) should be added here: 
\frac{d^m}{dx^m}f(x)=m!\sum_{n=m}^{\infty}\frac{s^(n)_m}{n!}\Delta^nf(x) which contains the stirling numbers of the first kind and the forward difference operator to compute nth derivatives as series. Thoughts?
— Preceding unsigned comment added by Onlineuser577215 (talk • contribs) 19:35, 21 September 2023 (UTC)
thread_title: Formula for the nth derivative

message: Researchrush (talk) 23:22, 28 September 2023 (UTC)
replies: text: Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. JTP (talk • contribs) 00:02, 29 September 2023 (UTC)
thread_title:  Semi-protected edit request on 28 September 2023 

message: The Total derivative, total differential and Jacobian matrix section is awfully wordy and detailed for an article that's supposed to be about the concept of the derivative in general. It's a bit odd that we have 10 paragraphs of text that take up about 2 screens and invoke mappings between tangent bundles, but we don't have anything on maxima and minima of single-variable functions. And within that section, there's less emphasis comparatively speaking on Jacobians than I would have expected given how much I've seen these concepts covered in courses at different stages. XOR'easter (talk) 03:43, 16 December 2023 (UTC)
replies: text: If that's the case, maybe this section can be summarize in at least one, two, or three paragraphs? Also, most of them are unsourced, together with the usage of first-person pronoun. Dedhert.Jr (talk) 13:28, 17 December 2023 (UTC)
replies: text: I've trimmed it back to something more reasonable. It still needs sources. XOR'easter (talk) 17:25, 20 December 2023 (UTC)
replies: text: @XOR'easter I have found the source of the definition , but it seems likely different than the article. Hopefully this helps, and I will keep searching for more. Dedhert.Jr (talk) 01:48, 21 December 2023 (UTC)
thread_title:  [[Derivative#Total derivative, total differential and Jacobian matrix|Total derivative, total differential and Jacobian matrix]] section 

message: During GAR, I removed the hidden online sources while improving the article.
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All of these sources here are in the format CS2. Dedhert.Jr (talk) 04:48, 31 December 2023 (UTC)
thread_title:  Online sources 

message: With regard to edit special:diff/, I wrote , not . Also, the article is not about the term as used in calculus on Euclidean spaces in general, but rather the special case of calculus on a one dimensional Euclidean space.
Given that,  does not explain the reason for the reversion. Would you accept ? -- Shmuel (Seymour J.) Metz Username:Chatul (talk) 17:34, 1 February 2024 (UTC)
replies: text: As said in my last edit, hatnotes are only for disambiguation, and must not duplicate the dab page and/or the infobox. So, for this article, the only acceptable hatnote is . D.Lazard (talk) 17:43, 1 February 2024 (UTC)
thread_title:  About