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MathGroup Archive 1995

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Re: Help on Polynomial Convolution

  • To: mathgroup at smc.vnet.net
  • Subject: [mg2133] Re: [mg2082] Help on Polynomial Convolution
  • From: bulent nedim alemdar <alemdar at rorqual.cc.metu.edu.tr>
  • Date: Wed, 4 Oct 1995 01:56:28 -0400

Hi Zheng

you can handle your problem with followings;

y=1+ 2*x + 3*x^2

yy=List[y[[1]],y[[2,1]],y[[3,1]]]

yields ->  yy={1,2,3}

yy=List[y[[1]],y[[2,2]],y[[3,2]]]

yields ->  yy={1,x,x^2}

See you later
bna


On Fri, 29 Sep 1995, Yuan Zheng wrote:

> Hi, 
> 
> I used Matlab to do numerical computing for a long time. Now I just
> switched to Mathematica to do the symbolic computing on the same
> problems. 
> 
> I want to represent a polynomial by it's coefficients as a List. For
> example, the polynomial 1 + 2x + 3x^2  is represented as {1,2,3}.
> 
> In matlab, there is a function conv(Poly1,Poly2) to compute the
> convolution of the two polynomials Poly1 and Poly2. Is there such
> package in Mathematica?
> 
> I am grad. student on control system design. Where can I find the
> related Mathematica packages on this topic?
> 
> Thanks
> 
> Yuan Zheng
> Dept of Mech. Eng.
> Umass, Amherst  
> 
> 


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