studiot Posted September 1, 2017 Share Posted September 1, 2017 (edited) An interesting formula to brighten your weekend for all those who periodically post strange threads about pi and all things circular. What is the following limit? [math]\mathop {\lim }\limits_{k \to \infty } \pi k\left( {\exp \left( {\frac{r}{k}} \right) - \exp \left( {\frac{{ - r}}{k}} \right)} \right)[/math] Edited September 1, 2017 by studiot Link to comment Share on other sites More sharing options...
mathematic Posted September 1, 2017 Share Posted September 1, 2017 2πr Link to comment Share on other sites More sharing options...
amplitude Posted October 17, 2017 Share Posted October 17, 2017 On 9/2/2017 at 7:36 AM, mathematic said: 2πr Either that, or the most exquisite cup of tea you ever tasted... Link to comment Share on other sites More sharing options...
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