User contributions for Csula Beatrice
A user with 171 edits. Account created on 11 March 2023.
16 January 2024
- 15:3515:35, 16 January 2024 diff hist +4 Gazeta Matematică No edit summary
- 15:3215:32, 16 January 2024 diff hist +17 m Gazeta Matematică No edit summary Tag: Visual edit
- 15:3015:30, 16 January 2024 diff hist +2,394 N 28163 Pagină nouă: '''28163 (Dana Heuberger)''' <br /> <br /> ''Aflați șirul de numere naturale nenule <math>(a_n)_{n\geq1}</math> pentru care <math>\frac{1}{{(1+a_1) \cdot a_{a_1}}} + \frac{1}{{(1+a_2) \cdot a_{a_2}}} + \ldots + \frac{1}{{(1+a_n) \cdot a_{a_n}}} = \frac{n}{{n+1}}</math>, pentru orice <math>n \geq 1</math>.'' <br /> <br /> '''Soluție:''' Dacă <math>n = 1</math>, egalitatea din enunț devine <math>(1+a_1) \cdot a_{a_1} = 2</math>, de unde obținem <math>a_1 = 1</math>. </b...
8 January 2024
- 23:0323:03, 8 January 2024 diff hist +660 N 14440 Pagină nouă: '''14440 (Vasile Ienuțaș și Radu Pop)''' <br /> <br /> ''Se consideră numărul natural <math> A=a_1^2+a_2^2+a_3^2+.....+a_{2012}^2 </math> unde <math>a_1,a_2,a_3,.....,a_{2012}</math> sunt numere prime, mai mari sau egale cu 5. Arătați că <math>B=2 \cdot A + 2013 </math> nu este pătrat perfect.'' <br /> <br /> '''Soluție:''' Dacă <math>a_i</math>, cu <math>i \in \{1,2,3,\ldots,2012\}</math>, este număr prim mai mare decât 5, atunci <math>a_i^2 \equiv M8 + 1</math...
- 03:0703:07, 8 January 2024 diff hist 0 26713 No edit summary
- 03:0503:05, 8 January 2024 diff hist +883 N 26713 Pagină nouă: '''28354 (Radu Pop și Vasile Ienuțaș)''' <br /> ''<br />Se consideră șirul de numere reale <math>(x_n)_{n \geq 0}</math> și <math>(y_n)_{n \geq 0}</math> cu <math>x_n \geq 1</math>, <math>y_n \geq 1</math>, pentru orice <math>n \in \mathbb{N}</math>, și <math>\lim_{{n \to \infty}} (x_n^2 + y_n^2) = 2</math>. Să se calculeze <math>\lim_{{n \to \infty}} x_n</math> și <math>\lim_{{n \to \infty}} y_n</math>.'' <br /> '''Soluție:''' <br /> <br /> Avem <math> 2 \leq x_n... Tag: Visual edit: Switched
14 May 2023
- 19:3719:37, 14 May 2023 diff hist +41 1892 - S Norocos →Exemplul 1
- 19:2719:27, 14 May 2023 diff hist +8 m 1754 - Munți →Rezolvare
- 19:1519:15, 14 May 2023 diff hist −1 m 3622 - Perechi Pare →Date de ieșire current Tag: Visual edit
- 19:0719:07, 14 May 2023 diff hist −20 3664 - Cif Par Cif Imp →Date de ieşire current Tag: Visual edit
- 18:5818:58, 14 May 2023 diff hist +15 2021 - Sumă Gauss2 →Rezolvare current Tag: Visual edit
- 18:5718:57, 14 May 2023 diff hist 0 2021 - Sumă Gauss2 →Date de ieșire Tag: Visual edit
- 18:0018:00, 14 May 2023 diff hist 0 2021 - Sumă Gauss2 →Exemplul 1
- 17:5617:56, 14 May 2023 diff hist +10 4272 - Prod Pare →Exemplul 2 current Tag: Visual edit
- 17:5517:55, 14 May 2023 diff hist +11 4272 - Prod Pare →Date de iesire Tag: Visual edit
- 17:5217:52, 14 May 2023 diff hist −36 3976 - Prod Impare →Exemplul 1 current Tags: Manual revert Visual edit
30 April 2023
- 15:0415:04, 30 April 2023 diff hist +1,762 2330 - prim023 →Explicaţie cod current
- 15:0215:02, 30 April 2023 diff hist +1,425 2327 - prim997 →Explicaţie cod current
- 15:0015:00, 30 April 2023 diff hist +1,246 2325 - prim003 →Explicaţie cod current
- 14:5714:57, 30 April 2023 diff hist +1,465 2533 - SecventaIncadrata →Explicaţie cod current
- 14:5614:56, 30 April 2023 diff hist +1,088 2328 - prim013 →Explicaţie cod current
- 14:5014:50, 30 April 2023 diff hist +1,081 3499 - Secv011 →Explicaţie cod current
- 14:4814:48, 30 April 2023 diff hist +1,103 2906 - Potrivire →Explicaţie cod current
- 14:4614:46, 30 April 2023 diff hist +836 3298 - fmi orase2 →Explicaţie cod current Tag: Visual edit: Switched
- 14:4314:43, 30 April 2023 diff hist +1,642 3790 - subsets No edit summary current
- 14:4114:41, 30 April 2023 diff hist +1,345 2329 - prim007 No edit summary current
- 14:3714:37, 30 April 2023 diff hist +52 3278 - AproapePrime No edit summary current
- 14:3314:33, 30 April 2023 diff hist +755 3460 - FirstPrime No edit summary current
- 14:2714:27, 30 April 2023 diff hist +34 2576 - Ciurul Lui Eratosthenes No edit summary current
- 14:2414:24, 30 April 2023 diff hist +96 3737 - SecvEgale1 v2 No edit summary current
- 14:1814:18, 30 April 2023 diff hist +910 3324 - Eratostene0 No edit summary current
- 14:1714:17, 30 April 2023 diff hist +1,045 0303 - Eratostene No edit summary current
- 14:1414:14, 30 April 2023 diff hist +1,130 0607 - Asfalt No edit summary current
- 14:1214:12, 30 April 2023 diff hist +1,314 1010 - produs No edit summary current
- 14:0814:08, 30 April 2023 diff hist +1,832 0301 - Frecventa1 No edit summary current
- 14:0414:04, 30 April 2023 diff hist +1,111 1927 - Bitsort No edit summary current
- 14:0214:02, 30 April 2023 diff hist +1,812 0276 - PareImpare No edit summary current
- 13:5713:57, 30 April 2023 diff hist +1,452 1744 - NrLipsa2 No edit summary current
- 13:5413:54, 30 April 2023 diff hist +2,028 2812 - Progresie3 No edit summary current
- 13:5013:50, 30 April 2023 diff hist +1,393 3287 - cifrazecmax No edit summary current
- 13:4813:48, 30 April 2023 diff hist +1,016 2843 - Puteri6 No edit summary current
- 13:4413:44, 30 April 2023 diff hist +1,372 0809 - NrLipsa1 No edit summary current
- 13:4113:41, 30 April 2023 diff hist +1,066 4147 - NumarareCifre No edit summary current
- 13:3913:39, 30 April 2023 diff hist +1,401 2837 - Intervale5 No edit summary current
- 13:3513:35, 30 April 2023 diff hist +854 0797 - SubNumar No edit summary current
- 13:3113:31, 30 April 2023 diff hist +1,481 1306 - SumChef No edit summary current
- 13:2713:27, 30 April 2023 diff hist +1,193 2669 - Count5 No edit summary current
- 13:2413:24, 30 April 2023 diff hist +745 0247 - CifreOrd1 No edit summary current
- 13:1813:18, 30 April 2023 diff hist +2,375 0239 - NrLipsa No edit summary current
- 13:1213:12, 30 April 2023 diff hist +1,920 0529 - Cifre4 No edit summary current