TI-M: Re: Math questions
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TI-M: Re: Math questions
>
> Hi!
> I am not very experienced with TI89. I bought it about 3 months ago.
> But I have quite big experience with symbolic software like
> Mathematica.
>
> I think about making some kind of Control Engineering Toolbox for
> TI89.
>
> For now I have two questions:
>
> 1. Is there some way to extract the coefficients of some polynomial
> into a list or a matrix (n by 1) or (1 by n)
>
> In Mathematica the function is
> In[2]:=
> CoefficientList[x^4 + 2*x^3*y + 5*x*y^2 + 13*y^4, x]
>
> Out[2]=
> {13*y^4, 5*y^2, 0, 2*y, 1}
I dont think it is possible with the functions built into the calculator..
perhaps by some programming with string manipulation?
> 2. What is the way to return several variables with different
> dimensions or even types. I need this for some simillarity
transformations.
> In Mathematica I can return lists of any objects. This is not the case
> with TI89. Is there some work-around?
nope. functions can only return a numerical value.. Yeah, it does suck
that the calculators are limited..
> Thank you!
>
> --JS
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