In the paper we establish the general solution of the function equation f(2x+y)+f(2x-y) = f(x+y)+f(x-y)+2f(2x)-2f(x) and investigate the Hyers-Ulam-Rassias stability of this equation in 2-Banach spaces.
Eivani, S., & Ostadbashi, S. (2015). Approximate mixed additive and quadratic functional in 2-Banach spaces. Caspian Journal of Mathematical Sciences, 4(2), 167-173.
MLA
S. Eivani; S. Ostadbashi. "Approximate mixed additive and quadratic functional in 2-Banach spaces". Caspian Journal of Mathematical Sciences, 4, 2, 2015, 167-173.
HARVARD
Eivani, S., Ostadbashi, S. (2015). 'Approximate mixed additive and quadratic functional in 2-Banach spaces', Caspian Journal of Mathematical Sciences, 4(2), pp. 167-173.
VANCOUVER
Eivani, S., Ostadbashi, S. Approximate mixed additive and quadratic functional in 2-Banach spaces. Caspian Journal of Mathematical Sciences, 2015; 4(2): 167-173.
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