NSolve problem
- To: mathgroup at smc.vnet.net
- Subject: [mg27541] NSolve problem
- From: AGUIRRE ESTIBALEZ Julian <mtpagesj at lg.ehu.es>
- Date: Sat, 3 Mar 2001 03:40:26 -0500 (EST)
- Organization: Universidad del Pais Vasco/Euskal Herriko Unibertsitatea
- Sender: owner-wri-mathgroup at wolfram.com
Dear Group, The following computation involving finding the roots of a fairly "large" polynomial produces these effects on an iMac and a G4 running version 4.0.1.0 * The kernel quits inmediatly * The Finder announces a type 2 or type 3 error * The computer hangs when quitting the frontend or restarting Before finding this problem, I have succefully solved thousands of similar equations. It is only this particular polynomial that produces this behaviour. poly = -379610373 + 86108525122 x - 9494410812843 x^2 + 678033800618890 x^3 - 35256637347077513 x^4 + 1422785868781829532 x^5 - 46379987523224586918 x^6 + 1255110040775305672800 x^7 - 28757943661703317295081 x^8 + 566216540434141788242036 x^9 - 9689635918166905495882851 x^10 + 145419622102662664506687100 x^11 - 1927635748101251322270468277 x^12 + 22698320261526730755198553574 x^13 - 238516616444064255358326013794 x^14 + 2244844544457248209076495840902 x^15 - 18977700242148569406030260324295 x^16 + 144425378677250071307785407099514 x^17 - 991008485501837267612722683739742 x^18 + 6137577944863948353668001351379085 x^19 - 34326439784958730341338590620522553 x^20 + 173372427244970231511243462159022530 x^21 - 790386259690389861011499411484727356 x^22 + 3249150512801263497674821800877444750 x^23 - 12025273387738045949766927419057733779 x^24 + 39983125143255083338516711567117321554 x^25 - 119092149085329990604796332906238009003 x^26 + 316623088476789267411001214031813664920 x^27 - 747964023676923486311300650584136934167 x^28 + 1561105298212051506376403179694366814908 x^29 - 2858356540987341736071315091852197268914 x^30 + 4550488627005201158356170201262005359426 x^31 - 6227602171254861022800069187941498698916 x^32 + 7219321171308545919834020175759542752800 x^33 - 6950806520792700621314978752272893634603 x^34 + 5408604513390527799203743488644413596831 x^35 - 3267975175700805824009526616434042764990 x^36 + 1438562129094179414396635651311443079894 x^37 - 410398690910611254706353259635396975000 x^38 + 56948086997945333979944420780869994640 x^39; NSolve[poly==0,x,100] Julian Aguirre | Voice: +34 946012659 Departamento de Matematicas | Fax: +34 944648500 Universidad del Pais Vasco | Postal: Aptdo. 644, 48080 Bilbao, Spain | email: mtpagesj at lg.ehu.es
- Follow-Ups:
- Re: NSolve problem
- From: Tomas Garza <tgarza01@prodigy.net.mx>
- Re: NSolve problem