Timeline for $\operatorname{Coth}(\alpha_n a) \to i$ when $n \to \infty $
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2023 at 13:47 | history | edited | Iosif Pinelis | CC BY-SA 4.0 |
added 38 characters in body
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| Apr 13, 2023 at 13:46 | comment | added | Iosif Pinelis | @jokadeka055 : This limit transition is of course incorrect, and I did not use it. Instead, here I used $|\exp(a+ib)|=e^a$ for real $a,b$. I have added this detail now. | |
| Apr 13, 2023 at 12:17 | comment | added | user253963 | why $2i e^{i\theta/2} \to \sqrt{2} + o(1)$? because $2i e^{i\theta/2} \to i\sqrt{2} + \sqrt{2}$ . Is this $i\sqrt{2}$ not important? | |
| Apr 11, 2023 at 16:34 | comment | added | user253963 | Thank you very much!! | |
| Apr 11, 2023 at 16:33 | vote | accept | user253963 | ||
| Apr 10, 2023 at 20:29 | history | answered | Iosif Pinelis | CC BY-SA 4.0 |