diferencijalnu

Diferencijalnu is the feminine accusative singular form of the adjective diferencijalna, used in Croatian, Serbian, Bosnian, and Montenegrin. It describes something related to a differential or differentiation and is commonly found in mathematical, scientific, and technical terminology. The root comes from diferencija (difference, differentiation), with the standard Slavic suffix -alna to form the feminine adjective.

Grammatically, diferencijalnu functions as an adjective that agrees in gender, number, and case with feminine nouns in the accusative singular. For example: Riješili smo diferencijalnu jednadžbu (We solved the differential equation). Another common construction is diferencijalnu metodu, as in Primijenili smo diferencijalnu metodu (We applied the differential method). It can also modify other feminine nouns in the accusative singular, such as diferencijalnu vrijednost (the differential value) or diferencijalnu količinu (the differential quantity), depending on the context.

In mathematical and scientific usage, the form signals relation to differentials, calculus, or differential operations. While the exact noun it modifies varies by discipline, the form remains a standard feminine accusative agreement and helps express precise technical meaning in Slavic technical writing. For learners, remember that the masculine and neuter counterparts are diferencijalni and diferencijalno, respectively, while the feminine nominative is diferencijalna, and the feminine accusative singular is diferencijalnu.