Nemat Allah Taghi-Nezhad - Department of Mathematics, Faculty of Basic Sciences, Gonbad Kavous University, Gonbad, Iran.
Fatemeh Taleshian - Department of Mathematics, Shahrood University of Technology, Shahrood, Iran.

Quadratic Programming has been widely applied to solve real-world problems. This paper describes a solution method for solving a special class of fuzzy quadratic programming problems with fuzziness in relations. Then the method is generalized to a more general fuzzy quadratic programming problem, where the cost coefficients, the matrix of the quadratic form, constraints coefficients, and the right-hand sides are all fuzzy numbers. Finally, some examples are taken to the utility of our proposed method.   

Fuzzy number, Quadric Programming, membership function, Fuzzy arithmetic, fuzzy constraint