Timeline for How many positive roots can $\sum_{i}\frac{a_i}{x+b_i}$ have where $b_i$'s are all positive? [closed]
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Sep 28, 2021 at 21:23 | history | unlocked | CommunityBot | ||
| S Sep 28, 2021 at 21:23 | history | locked | CommunityBot | ||
| S Sep 28, 2021 at 21:23 | history | closed |
Alexandre Eremenko YCor Roland Bacher user44191 Nemo |
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| Sep 28, 2021 at 19:25 | review | Close votes | |||
| Sep 28, 2021 at 21:25 | |||||
| Sep 28, 2021 at 19:06 | answer | added | Alexandre Eremenko | timeline score: 1 | |
| Sep 28, 2021 at 14:43 | comment | added | CWC | Thank you. I should have realized there is an easy way to construct counterexamples. | |
| Sep 28, 2021 at 14:27 | comment | added | Nemo | $N-1$. For example, when $N=3$, take $\frac{(x-1)(x-2)}{(x+1)(x+2)(x+3)}$ and expand into partial fractions. | |
| Sep 28, 2021 at 13:48 | history | asked | CWC | CC BY-SA 4.0 |