Quintic
- To: mathgroup at smc.vnet.net
- Subject: [mg38505] Quintic
- From: "PSi" <psinome at tee.gr>
- Date: Fri, 20 Dec 2002 04:27:40 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
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? Thanks, PSi