Nothing
returns <-
function(volvec,indexvol,beta)
{
covmat<-indexvol^2*beta%*%rbind(beta)
diag(covmat)<-volvec^2
tuotod <- exp(0.5*volvec^2)-1
tuotcov<-exp(0.5*outer(volvec^2,volvec^2,"+"))*(exp(covmat)-1)
list(mean=tuotod,cov=tuotcov)
}
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