In this paper, we will obtain first integral, integrating factor and λ-symmetry of third-order ODEs u ⃛=F(x,u,u ̇,u ̈). Also we compare Prelle -Singer (PS) method and λ-symmetry method for third-order differential equations.In this paper, we will obtain first integral, integrating factor and λ-symmetry of third-order ODEs u ⃛=F(x,u,u ̇,u ̈). Also we compare Prelle -Singer (PS) method and λ-symmetry m...

Rad problematizira formativno vrednovanje u nastavi Prirode i društva koja integrira spoznaje prirodnih društvenih znanosti. U okviru formativnog vrednovanja razlikuje se proces za u?enje kao u?enje. Oba pristupa uvažavaju ideju individualnog napredovanja u?enika pedocentristi?ki su usmjerena. radu je pozornost usmjerena na tehnike koje koriste što operacionaliziralo empirijskom dijelu rada. Ut...

The COVID-19 pandemic that started at the beginning of 2020 has put great constraints and significant challenges in organization social economic life. This paper analyses civil society response to presents specific adaptations opportunities contribute circumstances pandemic. stories organizations published on webpage ZADobroBIT.hr have been analysed by means a qualitative research. Thematic ana...

Studije diljem Europe pokazale su da se ljudi u ranim fazama pandemije COVID-19 nisu potpunosti pridržavali preventivnih mjera i preporuka koje dale vlasti. Kao što je vidljivo, stope usklađenosti mogu ovisiti o mnogim različitim čimbenicima, uključujući osobine ličnosti, spol, dob, pa čak iracionalno vjerovanje teorije zavjere. Ovi nalazi naglašavaju heterogenost među ljudima i, kombinaciji s ...

We study properties of the semilinear elliptic equation ∆u = 1 u on domains in R, with an eye toward nonnegative singular solutions as limits of positive smooth solutions. We prove the nonexistence of such solutions in low dimensions when we also require them to be stable for the corresponding variational problem. The problem of finding singular solutions is related to the general study of sing...

Assume that Ω is a bounded domain in Rn with n ≥ 2. We study positive solutions to the problem, ∆u = up in Ω, u(x)→∞ as x→ ∂Ω, where p > 1. Such solutions are called boundary blow-up solutions of ∆u = up. We show that a boundary blow-up solution exists in any bounded domain if 1 < p < n n−2 . In particular, when n = 2, there exists a boundary blow-up solution to ∆u = up for all p ∈ (1,∞). We al...