On Mar 4, 2011, at 6:01 PM, santiagorf wrote:
I'm having a function of the form
1> f<-function(x){
1+
1+ return(x^p)
1+
1+ }
,and I would like to integrate it with respect to x, where p should
be any
constant.
One way would be to set a value for p globally and then call integrate
function:
p=2
integrate(f, lower = -1, upper = 1)
However, I would like to use 'integrate' inside a function, so I
could call
it passing p as a parameter. I tried something like this:
1> p=1
1> integral<-function(p){
1+ integrate(f, lower = -1, upper = 1)
1+
1+ }
1>
1> integral(2)
0 with absolute error < 1.1e-14
,but it doesn't work as the integral of f is evaluated with p=1 (the
value
of the global variable p) and not with the value of p=2 when the
function
integral is called.
Functions carry with them environments in whaich they are defined.
Does anyone knows how can I solve this problem?
Build `f` to have two parameters.
--
David
Thanks in advance
santiagorf
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