Re: Quintic
- To: mathgroup at smc.vnet.net
- Subject: [mg38538] Re: Quintic
- From: christian_ottem at yahoo.no (Ottem)
- Date: Tue, 24 Dec 2002 06:40:32 -0500 (EST)
- References: <atup01$k5v$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"PSi" <psinome at tee.gr> wrote in message news:<atup01$k5v$1 at smc.vnet.net>... > According to > http://library.wolfram.com/examples/quintic/main.html > one of the roots of x^5+20x+32=0 is > a = (1/5)(-(2500 5^(1/2) + 250(50 - 10 5^(1/2))^(1/2) - > 750(50 + 10 5^(1/2))^(1/2))^(1/5) > - (-2500 5^(1/2) + 750(50 - 10 5^(1/2))^(1/2) + > 250(50 + 10 5^(1/2))^(1/2))^(1/5) > - (2500 5^(1/2) + 750(50 - 10 5^(1/2))^(1/2) + > 250(50 + 10 5^(1/2))^(1/2))^(1/5) > - (2500 5^(1/2) - 250(50 - 10 5^(1/2))^(1/2) + > 750(50 + 10 5^(1/2))^(1/2))^(1/5)) > According to Mathematica 4.1 this is not a root of the above equation. > Is there somewhere a typo? Yes. > Thanks, PSi No Problem. C