[R] hypergeometric

Zakaria, Roslinazairimah - zakry001
Wed, 03 Dec 2008 08:17:02 -0000

Hi,



I hope somebody can help me on how to use the hypergeometric function.
I did read through the R documentation on hypergeometric but not really
sure what it means.



I would like to evaluate the hypergeometric function as follows:

F((2*alpha+1)/2, (2*alpha+2)/2 , alpha+1/2, betasq/etasq).



I'm not sure which function should be used- either phyper or  qhyper or
dhyper



Where

alpha <- .75; beta1 <- 7 ; beta2 <- 5.5;

etasq <- ((beta1+beta2)/(2*beta1*beta2*(1-rho))) ^2

betasq <-
((beta1-beta2)^2+4*beta1*beta2*rho)/(4*beta1^2*beta2^2*(1-rho)^2)



Thank you so much for your help.






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