It' true, but if you type -8^(1/3) returns -2, and if you type -8^1/3 it returns -2.66666, maybe there are some rules about parenthesis...
regards Víctor ________________________________ De: r-help-boun...@r-project.org en nombre de Dave DeBarr Enviado el: sáb 18/07/2009 05:04 Para: r-help@r-project.org Asunto: [R] (-8)^(1/3) == NaN? Why does the expression "(-8)^(1/3)" return NaN, instead of -2? This is not answered by http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-are-powers-of-negative-numbers-wrong_003f Thanks, Dave [[alternative HTML version deleted]] ______________________________________________ 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. ______________________________________________ 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.
