Open AccessHyers -Ulam stability of quadratic functional equation
Author(s) -
Vediyappan Govindan,
Sandra Pinelas
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1597/1/012002
Subject(s) - materials science
In this paper, the authors proved the generalized U-H stability of quadratic functional equation of the form f ( x + y + 3 z ) − f ( x − y + 3 z ) − f ( x + y − 3 z ) − f ( − x + y + 3 z ) = f ( x + y ) + 6 f ( y + z ) + 6 f ( x + z ) − 9 f ( x ) − 9 f ( y ) − 30 f ( z ) in Banach space using direct method.