Gazeta Matematică nr 27020 2015: Difference between revisions
Nagy Lenard (talk | contribs) Pagină nouă: '''27020 (Gheorghe Szöllösy)''' Să se calculeze suma <math> \sum_{k=0}^{\left[\frac{n}{2}\right]} \frac{1}{4^k \cdot (k!)^2 (n-2k)!}, \quad n \geq 1 </math> |
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'''27020 (Gheorghe Szöllösy)''' | '''27020 (Gheorghe Szöllösy)''' | ||
Să se calculeze suma <math> \sum_{k=0}^{\left[\frac{n}{2}\right]} \frac{1}{4^k \cdot (k!)^2 (n-2k)!}, \quad n \geq 1 | Să se calculeze suma <math> \sum_{k=0}^{\left[\frac{n}{2}\right]} \frac{1}{4^k \cdot (k!)^2 (n-2k)!}, \quad n \geq 1. | ||
</math> | </math> | ||
Latest revision as of 17:59, 18 October 2023
27020 (Gheorghe Szöllösy)
Să se calculeze suma
![{\displaystyle \sum _{k=0}^{\left[{\frac {n}{2}}\right]}{\frac {1}{4^{k}\cdot (k!)^{2}(n-2k)!}},\quad n\geq 1.}](https://wikimedia.org/api/rest_v1/media/math/render/svg/e1963241c69cc0a80c84902a9ace61e99e7bfda6)