Hi,
the function 'fr' evaluates each element of the vector
'x', independently of its length. 'fr2' does not.
Try with
fr2<-function(x){
ifelse(x<1, x*x, 1)
}
> integrate(fr2,-1,2)
1.67 with absolute error < 3.4e-05
Marco
--- Lynette Sun <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> Why
>
The function need to be vectorized. Try:
> fr2.new <- function(x) ifelse(x < 1, x * x, 1)
> integrate(fr2.new, -1, 2)
1.67 with absolute error < 3.4e-05
Andy
From: Lynette Sun
>
> Hi all,
>
> Why
>
> fr2<-function(x)
> { if(x<1){x*x}else{1}
> }
>
> integrate(fr2,-1,2)
>
> gives the
Hi all,
Why
fr2<-function(x)
{ if(x<1){x*x}else{1}
}
integrate(fr2,-1,2)
gives the following wrong answer:
3 with absolute error < 3.3e-14
Warning message:
the condition has length > 1 and only the first element will be used in: if (x
< 1) {
while
fr<-function(x){as.numeric(x<1)*(x^2-1
