stirling's formulae

Stirling's formula

[stur-lingz]
noun Mathematics.
a relation that approximates the value of n factorial (n! ), expressed as .

Origin:
1925–30; after James Stirling (died 1770), Scottish mathematician

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World English Dictionary
Stirling's formula
 
n
a formula giving the approximate value of the factorial of a large number n, as n! ≅ (n/e)n√(2πn)
 
[named after James Stirling (1692--1770), Scottish mathematician]

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