Dear R people:
Is there a way to perform simple polynomial multiplication; that is,
something like
(x - 3) * (x + 3) = x^2 - 9, please?
I looked in poly and polyroot and expression. There used to be a
package that had this, maybe?
thanks,
Erin
--
Erin Hodgess
Associate Professor
Department
Dear Erin,
Yes. Take a look at page 13 in [1].
HTH,
Jorge
[1] http://cran.r-project.org/web/packages/Ryacas/vignettes/Ryacas.pdf
On Wed, Oct 15, 2008 at 5:44 PM, Erin Hodgess [EMAIL PROTECTED]wrote:
Dear R people:
Is there a way to perform simple polynomial multiplication; that is,
Hodgess [EMAIL PROTECTED]
Subject: [R] a really simple question on polynomial multiplication
To: R Help r-help@r-project.org
Received: Thursday, 16 October, 2008, 8:44 AM
Dear R people:
Is there a way to perform simple polynomial multiplication;
that is,
something like
(x - 3) * (x + 3) = x^2
On 16/10/2008, at 10:44 AM, Erin Hodgess wrote:
Dear R people:
Is there a way to perform simple polynomial multiplication; that is,
something like
(x - 3) * (x + 3) = x^2 - 9, please?
I looked in poly and polyroot and expression. There used to be a
package that had this, maybe?
The
On 16/10/2008, at 2:27 PM, Moshe Olshansky wrote:
Hi Rolf,
Thank you for making me aware of the existence of PolynomF package.
By the way, your solution needs a small modification:
a - polynom(c(-3,1)) and not polynom(-3,1) and similar for b.
Indeed; I typed the code into the email
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