Olá, Romero!

Veja se esses referências podem ajudar:

http://r.789695.n4.nabble.com/Double-Integration-td2275442.html

http://stackoverflow.com/questions/8913603/calculating-double-integrals-in-r-quickly

Éder Comunello <c omunello.eder@gmail.com>
Dourados, MS - [22 16.5'S, 54 49'W]