Hello all R users
I want to calculate this univariate integral:
exp(-x)*sum(y^x) respect to x from 0 to 3 where y is a vector y=(2,3,5).
In fact, the original y vector has a large number of elements but I propose
with 3 elements.
I know that I can resolve this problem doing
fun <- function(x) exp(-x)*(2^x+3^x+5^x)
integrate(fun,0,3)
When the y vector has a large number of elements the last solution is not
possible,
if I use this another way I can not obtain the true answer
y <- c(2,3,5)
fun1 <- function(x) exp(-x)*sum(y^x)
integrate(fun1,0,3)
Someone could give me a help with the problem?
Thanks.
Freddy Hernández Barajas
[[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.
