What's the difference in all the polynomial solve/root/zero functions?
09-07-2015, 04:59 AM
Post: #1
 ewjax Junior Member Posts: 7 Joined: Sep 2015
What's the difference in all the polynomial solve/root/zero functions?
Hello,

I am confused by why the Prime has so many different menu options for solving polynomial roots. They all seem conceptually identical to me.

Toolbox / CAS / Solve / Solve -> solve()
Toolbox / CAS / Solve / Zeros -> zeros()
Toolbox / CAS / Solve / Complex Solve -> csolve()
Toolbox / CAS / Solve / Complex Zeros -> cZeros()
Toolbox / CAS / Polynomial / Find Roots -> proot()

Although the syntax in the last (proot) is slightly different from the first four, and some return {} lists while others return [] vectors, all five functions yield identical answers when you feed them the polynomial

x^4 -1 = 0 -> {-1, i, 1, -i} or [-1 i 1 -i]

Can someone offer any insight into when you might need to select one over the others?
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 Messages In This Thread What's the difference in all the polynomial solve/root/zero functions? - ewjax - 09-07-2015 04:59 AM RE: What's the difference in all the polynomial solve/root/zero functions? - parisse - 09-07-2015, 06:35 AM RE: What's the difference in all the polynomial solve/root/zero functions? - ewjax - 09-07-2015, 03:25 PM RE: What's the difference in all the polynomial solve/root/zero functions? - parisse - 09-07-2015, 04:09 PM RE: What's the difference in all the polynomial solve/root/zero functions? - ewjax - 09-07-2015, 06:11 PM RE: What's the difference in all the polynomial solve/root/zero functions? - Terje Vallestad - 09-07-2015, 07:44 PM RE: What's the difference in all the polynomial solve/root/zero functions? - Helge Gabert - 09-07-2015, 09:28 PM RE: What's the difference in all the polynomial solve/root/zero functions? - parisse - 09-08-2015, 06:11 AM

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