problem with the precision of numbers
kayj <kjaja27 <at> yahoo.com> writes:
Hi All,
I was wodering if it is possible to increase the precision using R. I ran
the script below in R and MAPLE and I got different results when k is large.
Any idea how to fix this problem? thanks for your help
for (k in 0:2000){
s=0
for(i in 0:k){
s=s+((-1)^i)*3456*(1+i*1/2000)^3000
}
}
(1) see http://wiki.r-project.org/rwiki/doku.php?id=misc:r_accuracy:high_precision_arithmetic (2) consider whether there is more accurate algorithm you could use. I don't recognize the series, but perhaps it has a closed form solution, maybe as a special function? How much accuracy do you really need in the solution? Ben Bolker