Funzione gamma incompleta: differenze tra le versioni

Contenuto cancellato Contenuto aggiunto
Riga 44:
\frac{\partial \Gamma (a,x) }{\partial x} = - x^{a-1} e^{-x}
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La derivata rispetto al parametro ''a'' è dato da<ref>K.O Geddes, M.L. Glasser, R.A. Moore ye T.C. Scott, ''Evaluation of Classes of Definite Integrals Involving Elementary Functions via Differentiation of Special Functions'', AAECC (Applicable Algebra in Engineering, Communication and Computing), vol. 1, (1990), pp.149-165, [http://www.springerlink.com/content/t7571u653t83037j/]
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:<math> \frac{\partial \Gamma (a,x) }{\partial a} = \ln (x) \Gamma (a,x) + x ~T(3,a,x) </math>