Optimal Polynomial Check

Started by warnexus, Feb 24 2013 12:31 PM

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#1 warnexus Members - Reputation: 452

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Posted 24 February 2013 - 12:31 PM

I'm writing a program that checks for valid polynomials read from a file. Is checking if the polynomial is equal to zero enough?

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#2 Paradigm Shifter Members - Reputation: 1841

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Posted 24 February 2013 - 04:19 PM

Need more info....

Surely everything is valid as a polynomial as long as it doesn't have negative powers of the free variables. Two or more values for a given power might be invalid as well I suppose...

Are you trying to check if a polynomial has a solution over the real numbers? You may want to start by looking here: http://en.wikipedia.org/wiki/Descartes%27_rule_of_signs in that case.

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