
handle: 20.500.12128/460
We solve functional equation of the form f(x + y − xy) + f(xy) = 2f((x+y)/2) in the class of functions transforming the space of all reals into itself. We also prove that this equation is stable in the Hyers-Ulam’s sense.
Functional Equation, Hyers-Ulam stability, Jensen and Hoszú functional equations
Functional Equation, Hyers-Ulam stability, Jensen and Hoszú functional equations
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