       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[],y[[2,1]],y[[3,1]]]

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

yy=List[y[],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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