Solution and Stability of a Mixed Type Cubic and Quartic Functional Equation in Quasi-Banach Spaces
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We obtain the general solution and the generalized Ulam-Hyers stability of the mixed type cubic and quartic functional equationf(x+2y)+f(x−2y)=4(f(x+y)+f(x−y))−24f(y)−6f(x)+3f(2y)in quasi-Banach spaces.
2011 ◽
Vol 2011
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pp. 1-18
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2013 ◽
Vol 59
(2)
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pp. 299-320
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2017 ◽
Vol 35
(1)
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pp. 43
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