This paper introduces four approximate formulas for calculating r (x), x ε R+. They produce approximate values which are "very close " to the tabulated ones. One of the formulas gives correct results up to at least five decimal places. These formulas were compared according to what we call "The Uniformly Best Criterion".
Azzam, A., & Abbas, Y. (1991). Approximate Formulas for the Gamma Function with Positive Argument. The Egyptian Statistical Journal, 35(2), 219-229. doi: 10.21608/esju.1991.315007
MLA
Abdul-Mordy H. Azzam; Yehia S. Z. Abbas. "Approximate Formulas for the Gamma Function with Positive Argument", The Egyptian Statistical Journal, 35, 2, 1991, 219-229. doi: 10.21608/esju.1991.315007
HARVARD
Azzam, A., Abbas, Y. (1991). 'Approximate Formulas for the Gamma Function with Positive Argument', The Egyptian Statistical Journal, 35(2), pp. 219-229. doi: 10.21608/esju.1991.315007
VANCOUVER
Azzam, A., Abbas, Y. Approximate Formulas for the Gamma Function with Positive Argument. The Egyptian Statistical Journal, 1991; 35(2): 219-229. doi: 10.21608/esju.1991.315007
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