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Browsing by Author "COZMA, Dumitru"

Browsing by Author "COZMA, Dumitru"

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  • COZMA, Dumitru; SALI, Larisa (Universitatea de Stat din Tiraspol, 2021)
    In this paper some applications of the method of undetermined coefficients to solving problems in algebra and mathematical analysis are presented.
  • AFANAS, Dorin; COZMA, Dumitru (Universitatea de Stat din Tiraspol, 2021)
    This article investigates the applications of combinatorics rules and principles. Subfactories and the general issue of permutations are being investigated. The formula of the subfactories is proved by two methods.
  • COZMA, Dumitru; SALI, Larisa (Universitatea Pedagogică de Stat "Ion Creangă", 2022)
    In this paper an analysis of the integration methods and some mistakes encountered in the calculation of the definite integrals is carried out. Some suggestions regarding the diversification of contexts in application of ...
  • COZMA, Dumitru (Universitatea Pedagogică de Stat "Ion Creangă", 2023)
    In this paper, some aspects of the development of critical thinking are examined. In particular, the role of counterexamples in mathematics is developed for the formation of these skills in pupils and students.
  • CHIRIAC, Liubomir; MIHĂLACHE, Lilia; COZMA, Dumitru; AFANAS, Dorin; SALI, Larisa; TELEUCĂ, Marcel (Universitatea Pedagogică de Stat "Ion Creangă", 2023)
    În lucrarea respectivă autorii, prin intermediul unor probleme concrete, care țin de diverse domenii (fizică, matematică, economie, biologie, chimie, determinarea traiectoriei minime de zbor a vehiculelor aeriene, etc.), ...
  • CHIRIAC, Liubomir; MIHĂLACHE, Lilia; COZMA, Dumitru; AFANAS, Dorin; SALI, Larisa; TELEUCĂ, Marcel (Universitatea Pedagogică de Stat "Ion Creangă", 2023)
    Lucrare realizată în cadrul proiectului de cercetări științifice „Metodologia implementării TIC în procesul de studiere a științelor reale în sistemul de educație din Republica Moldova din perspectiva inter/transdisciplinarității ...
  • COZMA, Dumitru (Universitatea Pedagogică de Stat "Ion Creangă", 2023)
    We consider the Lotka-Volterra differential equation:y(a2x +b2y+c2)dx=x(a1x +b1y+c1)dy in which the coefficients a1, b1, c1, a2, b2, c2 and variables x, y are assumed to be real. This equation introduced by Lotka and ...
  • COZMA, Dumitru; BECHET, Olesea (Universitatea de Stat din Tiraspol, 2020)
    We find conditions for a singular point 𝑂(0,0) of a center or a focus type to be a center, in a cubic differential system with two invariant straight lines and one invariant conic. The presence of a center at 𝑂(0,0) is ...