On 13 říj, 16:08, rjf <fate...@gmail.com> wrote:
> Is x^2+3 free of x^6?
> Ordinarily I would think that if E is free of v, then one could vary v
> in any way, and not affect the value of E.
> If one varies x^6, it is kind of difficult to keep x^2+3 constant.
>
> I suppose you could specify a program to search in an expression to
> see if x^6 occurs as a distinct subcomponent, but it probably wouldn't
> be too useful. For example,
> does x^6 occur in x*(x^5+1)?
>
> I suggest you require that the value of v be a symbol.
> RJF
>
Thanks for clarification, I understand.
Robert Marik
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