The stability of the cubic functional equation in various spaces
نویسندگان
چکیده
We prove the stability of the cubic functional equation f(2x + y) + f(2x− y) = 2f(x + y) + 2f(x− y) + 12f(x) in the setting of various spaces. AMS subject classifications: Primary 46S40, 39B82, 54E40
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