I need to solve a 6th degree polynomial in my software, so I am looking for an open source numerical polynomial solver.
If you know of anything that could be of use to me, please post it here.
Thanks a lot! :)
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Try https://scicomp.stackexchange.com. – lhf Sep 01 '17 at 13:18
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Will do. Thanks! – Leta Sep 01 '17 at 13:26
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Do you need a numerical approximation or an exact solution? I'm pretty sure there are formulas for the 6th degree, you just can't make a formual that only uses elementary operations (addition, subtraction, multiplication, division) and taking roots. But if you add some other operations then I believe there is a forumula. – Gregory Grant Sep 01 '17 at 13:31
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An approximation should be OK, depending how precise it is. – Leta Sep 01 '17 at 13:59
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You can use Newton's method usually to get as accurate as you want. There are online calculators that will do Newton for you, for example this one: https://www.shodor.org/unchem/advanced/newton/nmethod.html – Gregory Grant Sep 01 '17 at 15:22