About a class of functions which admits primitive functions
C Buse, Gabriela Buşe, Valentina Vulcanov · Octogon Mathematical Magazine archive · 2001
In this paper we would to present a unitary solution for a class of problems asking to verify if a function f of some form has (or has not) a primitive, function, i.e. if exists (or not exists) a derivable function F such F' = f. The basic idea for the proof consist in the of the initial function in an Algebraic sum of functions such that every term of decomposition has (or has not) a primitive function.