Timeline for Choosing Notation for Variable Substitution into Derivative Expressed with Differentials [closed]
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 6, 2017 at 11:32 | comment | added | Michael Bächtold | $\frac{\mathrm{d}f}{\mathrm{d}x}|_{x=a}$ might indeed be more common (it's even part of the ISO 80000-2 standard), but it doesn't make any sense under the modern interpretation of $f$ as a map (say of type $\mathbb{R}\to\mathbb{R}$), since "$f$ doesn't know about the name of its input variable". It's very plausible that historically Jacobi contributed to this misunderstanding, although the $f$ in his article was of type $\mathbb{R}$. | |
| May 13, 2014 at 9:17 | history | closed |
Ryan Budney Yemon Choi Neil Strickland Stefan Waldmann Stefan Kohl♦ |
Not suitable for this site | |
| May 13, 2014 at 5:36 | review | Close votes | |||
| May 13, 2014 at 9:17 | |||||
| May 12, 2014 at 14:41 | vote | accept | Alexander Shukaev | ||
| May 12, 2014 at 13:43 | answer | added | user62675 | timeline score: 2 | |
| May 12, 2014 at 13:11 | comment | added | Dan Petersen | More common than either of #2 and #3 is $\frac{\mathrm{d}f}{\mathrm{d}x}\vert_{x=a}$. | |
| May 12, 2014 at 12:29 | history | asked | Alexander Shukaev | CC BY-SA 3.0 |