[R] How to define a function to be smooth?

[Thomas W Blackwell]

Is this a homework assignment ?

-  tom blackwell  -  u michigan medical school  -  ann arbor  -

On Tue, 4 Nov 2003, Feng Zhang wrote:

> Hey, R-listers
>
> When we say a function f(t) is smooth, does this mean that
> f has infinite differentials with respect to t?
>
> Or any other formal definition on this?
>
>
> Thanks for your points.
>
> Fred
>
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