[R] Using integrate

From: Ayman Oweida <ajoweida_at_yahoo.com>
Date: Mon, 21 Jul 2008 13:56:34 -0700 (PDT)

I have a function, say:
f<-function(x)  exp(x)

and I would like to obtain the integration of the function while adding a few operations within the integration (I need point-by-point integration), say:

t<-seq(0,40, by=1)
z<-array(0,length(t))
for (i in 1:40){
z[i] <- integrate ( f *  (t [i+1] - t)   ,  (i-1)  ,  i   )

In R, I can only have the function in 'integrate' i.e. 
z[i] <- integrate ( f  ,  (i-1)  ,  i   )

but I want to add additional operations within the 'integrate' command, which I cannot just add to the function f.

any input is appreciated.

Ayman

      
	[[alternative HTML version deleted]]


______________________________________________

R-help_at_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. Received on Mon 21 Jul 2008 - 21:07:59 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 22 Jul 2008 - 00:32:24 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive