I would like to express my gratitude for the great help given by David and Hans regarding my last query.
Thank you very much for your time, people. All the best, Tiago --- Hello, R users! I am trying to double integrate the following expression: # expression (1/(2*pi))*exp(-y2/2)*sqrt((y1/(y2-y1))) for y2>y1>0. I am trying the following approach # first attempt library(cubature) fun <- function(x) { (1/(2*pi))*exp(-x[2]/2)*sqrt((x[1]/(x[2]-x[1])))} adaptIntegrate(fun, lower = c(0,0), upper =c(5, 6), tol=1e-8) However, I don't know how to constrain the integration so that y2>y1>0. Any ideas? Tiago -- Tiago V. Pereira, MSc, PhD Center for Studies of the Human Genome Department of Genetics and Evolutionary Biology University of São Paulo Rua do Matão, 277 CEP 05508-900 São Paulo - SP, Brazil ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.