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G. Zamani Eskandani Pasc Gavruta John M. Rassias Ramazan Zarghami 《Mediterranean Journal of Mathematics》2011,8(3):331-348
In this paper, we establish the general solution and investigate the generalized Hyers-Ulam stability of the following mixed
additive and quadratic functional equation
f(lx + y) + f(lx - y) = f(x + y) + f(x - y) + (l- 1)[(l+2)f(x) + lf(-x)],f(\lambda x + y) + f(\lambda x - y) = f(x + y) + f(x - y) + (\lambda - 1)[(\lambda +2)f(x) + \lambda f(-x)], 相似文献
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