Timeline for Defining vertical tangent lines
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
|
|
| Feb 14, 2016 at 20:09 | answer | added | Dan Christensen | timeline score: 0 | |
| Jan 25, 2016 at 16:47 | comment | added | user507 | Related: math.stackexchange.com/questions/771614/… | |
| Jan 25, 2016 at 16:45 | comment | added | user507 | A simple approach would be to require that the function be invertible in some neighborhood of $a$, and that the inverse function have a zero derivative. Another method would be to use a parametrized curve, and define the tangent line as the one that points in the direction of $(\dot{x},\dot{y})$. | |
| Jan 25, 2016 at 7:55 | comment | added | Benoît Kloeckner | It took me time to understand that you mean $x\mapsto x^{\frac23}$ to be defined over $\mathbb{R}$; I do not know if this is customary in some countries, but I believe it a bad idea to define any non-integer power of negative numbers. It yields very different points of view for $x^{\frac12}$, $x^{\frac17}$ and $x^{\sqrt{2}}$ which can only add to the usual confusions on powers. | |
| Jan 24, 2016 at 22:22 | history | edited | quid | CC BY-SA 3.0 |
Removed MathJax for formatting, tag
|
| Jan 24, 2016 at 16:33 | answer | added | user1815 | timeline score: 5 | |
| Jan 21, 2016 at 5:00 | history | edited | Benjamin Dickman | CC BY-SA 3.0 |
MSE xp
|
| Jan 21, 2016 at 0:55 | answer | added | Steven Gubkin | timeline score: 4 | |
| Jan 21, 2016 at 0:35 | review | First posts | |||
| Jan 21, 2016 at 2:19 | |||||
| Jan 21, 2016 at 0:32 | history | asked | user84413 | CC BY-SA 3.0 |