[R] Problems about Derivaties

2007-03-20 Thread enrico\.foscolo
Dear participants to the list, this is my problem: I want to obtain an expression that represents the second derivative of one function. With deriv3 (package stats) it is possible to evaluate the second derivative, but I do not know how I can get the (analytical) expression of this derivative.

Re: [R] Problems about Derivaties

2007-03-20 Thread Duncan Murdoch
On 3/20/2007 3:17 PM, enrico.foscolo wrote: Dear participants to the list, this is my problem: I want to obtain an expression that represents the second derivative of one function. With deriv3 (package stats) it is possible to evaluate the second derivative, but I do not know how I can get

Re: [R] Problems about Derivaties

2007-03-20 Thread Gabor Grothendieck
On 3/20/07, enrico.foscolo [EMAIL PROTECTED] wrote: Dear participants to the list, this is my problem: I want to obtain an expression that represents the second derivative of one function. With deriv3 (package stats) it is possible to evaluate the second derivative, but I do not know how I