perplexus.info :: Calculus : Repeated Root Research

Repeated Root Research (Posted on 2006-05-08)

If I told you a certain polynomial P(x) had a double root (only one!), how could you go about finding it, WITHOUT trying to find every root? Also, the EXACT value of the root is sought; not an approximation.

NB. Roots may be any kind --real or complex-- but they are all different, with multiplicity "1", except for one that has multiplicity "2".

See The Solution Submitted by Old Original Oskar!

Rating: 3.6667 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Complex not possible

| Comment 5 of 7 |

You can't have exactly one complex root with multiplicity 2, its conjugate will also have multiplicity 2.

Posted by Jer on 2006-05-09 13:14:57

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