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Topic: Definition of "closed form"?
Replies: 6   Last Post: Jul 9, 1996 10:38 AM

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Clark or David or Sarah

Posts: 1
Registered: 12/12/04
Definition of "closed form"?
Posted: Jul 6, 1996 4:15 PM
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Does anyone know of a formal definition for a "closed form" solution?

For example, I would say 1/(1-x) is a closed form for the geometric
series it generates.

But what about exp(x) or sin(x)? Are they closed forms? If so,
because they are represented by converging series? If so, then what
about bessel function J(x), or for that matter, any converging sereis

The more I think about it the less certain I am I know what it is, I
dont even know one if I see one anymore!

Anyone have the answer? thanks


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