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Funciones Gamma y Beta

Funciones Gamma y Beta

Funciones Gamma y Beta

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(71,+ 1/2) - (71, - 1/2)r(71,- 1/2)- (71, - 1/2)(71, - 3/2)r((71, - 3/2)de donde- (71,- 1/2)(71, - 3/2)(71, - 5/2) ·1/2· r(I/2)(271, ; 1) (271, ; 3) (271, ; 5) ~J1fLa función <strong>Gamma</strong>r(71,+ 1/2) =satisface1 . 3 . 5 .... (271, - 1)J1f2 n(4)'Trr(x)r(1 - x) = ,O < x < 1se71,'TrXEn efecto:Usando (1) se tiene que(5)r(x)r(1 - x) - fooo e-ttX-ldt· fooo e-s s-xdsfooo fooo e-(t+s)tx-ls-XdtdsHaciendot uv uu=t+s , v=- t--- s=--s -1+v' 1+vse tiene que el Jacobiano de la transformación viene dado por8(t,s)8(u,v)_ I ¡! ¡! I = I l~v (l';v)2 I8~ 8~ l¡v - (l';v)2U(1+ V)2l3

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