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Stability of a generalized trigonometric-quadratic functional equation
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نویسنده
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tongsomporn j. ,laohakosol v.
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منبع
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journal of function spaces - 2013 - دوره : 2013 - شماره : 0
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چکیده
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A stability result for the generalized trigonometric-quadratic functional equation ℱ (x + y) - (x - y) = 2 ℋ (x) (y) + (x) + ℳ (y) over the domain of a normed space and the range of a banach space is derived. it states that under appropriate conditions on the function ℋ (x) (y),the four functions ℱ (x)(x),(x),and ℳ (x) are approximately equal to combinations of certain quadratic and additive functions. © 2013 janyarak tongsomporn and vichian laohakosol.
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آدرس
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school of science,walailak university, Thailand, department of mathematics,faculty of science,kasetsart university, Thailand
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Authors
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