[R] how can I get the coefficients of x^0, x^1, x^2, . , x^6 from expansion of (1+x+x^2)^3
james.holtman@convergys.com
james.holtman at convergys.com
Fri Dec 3 21:43:43 CET 2004
Use the 'polynom' library:
> p <- as.polynomial(c(1,1,1))
> p
1 + x + x^2
> p^3
1 + 3*x + 6*x^2 + 7*x^3 + 6*x^4 + 3*x^5 + x^6
> unclass(p^3)
[1] 1 3 6 7 6 3 1
>
__________________________________________________________
James Holtman "What is the problem you are trying to solve?"
Executive Technical Consultant -- Office of Technology, Convergys
james.holtman at convergys.com
+1 (513) 723-2929
"Peter Yang"
<peterwyang at gmail.com To: <r-help at stat.math.ethz.ch>
> cc:
Sent by: Subject: [R] how can I get the coefficients of x^0, x^1, x^2, . , x^6 from
r-help-bounces at stat.m expansion of (1+x+x^2)^3
ath.ethz.ch
12/03/2004 14:56
Hi,
I would like to get the coefficients of x^0, x^1, x^2, . , x^6 from
expansion of (1+x+x^2)^3.
The result should be 1, 3, 6, 7, 6, 3, 1;
How can I calculate in R?
You help will be greatly appreciated.
Peter
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