
doi: 10.1155/2011/463164
We obtain the general solution and the generalized Hyers‐Ulam stability of the general cubic‐quartic functional equation for fixed integerskwithk≠ 0, ±1:f(x+ky) +f(x−ky) =k2(f(x+y) +f(x−y)) + 2(1 −k2)f(x)+((k4−k2)/4)(f(2y) − 8f(y)), where .
Functional equations for real functions, generalized Hyers-Ulam stability, QA1-939, Stability, separation, extension, and related topics for functional equations, Mathematics, general cubic-quartic functional equation
Functional equations for real functions, generalized Hyers-Ulam stability, QA1-939, Stability, separation, extension, and related topics for functional equations, Mathematics, general cubic-quartic functional equation
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