You might find searching the web on this topic educational. Consider [1] and [2], for example.
I doubt this will be changing, so you should do your exponentiation in a function that handles your special case. By the way, as nice as RStudio might be, it is not R... it USES R. Examples like yours won't run as-is in vanilla R so are not really reproducible for (probably most) readers of this list. Please (re-)read the Posting Guide. [1] http://mathforum.org/dr.math/faq/faq.0.to.0.power.html [2] http://www.askamathematician.com/2010/12/q-what-does-00-zero-raised-to-the-zeroth-power-equal-why-do-mathematicians-and-high-school-teachers-disagree/ --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. On May 26, 2014 5:16:21 AM PDT, ritwi...@isical.ac.in wrote: >Dear R helpers, > > >today I found something interesting in R. 0^0 gives value 1 in R. But >it >is undefined in mathematics. During debugging a R code, I found it and >it >effects my program severely. So my question is why it is defined 1 in >R? >Is there any particular reason or its a bug in the R software? > >Here is one demo: > >************************************************* > >ff=function(u){ > return( x^0 * u) >} > >x=0 >zz=integrate(ff,lower=0,upper=1)$value >zz > > > >> source('~/.active-rstudio-document') >> zz >[1] 0.5 >> > >************************************************* > >Looking forward to hear any response. > >Regards, > >Ritwik Bhattacharya >Indian Statistical Institute Kolkata > >______________________________________________ >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.